10-26 Exercise 3: Find roots of a quadratic equation

0 like 1 dislike
15.2k views

Write a program to find roots of a quadratic equation

A quadratic equation is a second order equation having a single variable. Any quadratic equation can be represented as where a, b and c are constants ( a can't be 0) and x is unknown variable. 

寫一個找二次方程的求根程式

For Example

 is a quadratic equation where a, b and c are 2, 5 and 3 respectively.

To calculate the roots of quadratic equation we can use below formula. There are two solutions of a quadratic equation.

使用下列公式:

x = (-b + sqrt(D))/(2*a)
x = (-b - sqrt(D))/(2*a)

where, D = (b*b-4*a*c) is Discriminant (判別式), which differentiate the nature of the roots of quadratic equation.

For the complex result (複數根):

realPart = -b/(2*a);
imaginaryPart =sqrt(-D)/(2*a);

Note: We have used sqrt() function to find square root which is in math.h library.

 

Example input 1:

1 2 1

Example output 1:

Roots of 1.00x^2 + 2.00x + 1.00 = 0 are real and same
x1 = x2 = -1.00

 

Example input 2:

1 -3 2

Example output 2:

Roots of 1.00x^2 + -3.00x + 2.00 = 0 are real and different
x1 = 2.00
x2 = 1.00

 

Example input 3:

1 2 2

Example output 3:

Roots of 1.00x^2 + 2.00x + 2.00 = 0 are complex and different
x1 = -1.00+1.00i
x2 = -1.00-1.00i
[Exercise] Coding (C) - asked in Chapter 5: Selection Statements by (5.2k points)
ID: 28934 - Available when: 2017-10-26 18:00 - Due to: Unlimited
reopened by | 15.2k views
0 0
We will continue this question in few days
commented by (12.1k points)
0 0
Everything is fixed. Enjoy your time with The Judge :)
commented by (12.1k points)
0 0
ANNNNNNNNNNNNNNNNNNNNNNNNNNGRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
commented by (-249 points)
0 0
Your code has newline at the end sometime. You learned this lesson many times!
commented by (12.1k points)
0 0
After i correct the newline in my code,there is still wrong output.However,I had run the program in Codeblocks.The output is still as well as the result. Seeking for help.
commented by (-214 points)
0 0
your output lack of 1 space at line 8 when print out "Roots of ...". Please be careful with all small details when working with online judge
commented by (9.9k points)

56 Answers

0 like 0 dislike 
Hidden content!
   ** * *  *** *  *** 
* *   **  *** ***  **
int main()
{
  **    * ** *  *  **  * *****    a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
****  *** ***    ***  *   *    *  **   ****** ** ***     *  * ** *** *  *  

  * ** * *  **  *  ****** ***  *  * *  ***   of %.2fx^2 + %.2fx +%.2f = 0 are",a,b,c);
 ** *** *      *   * * *  = (b*b-4*a*c);
 **   **    *      *****  = (-b + sqrt(D))/(2*a);
   * *  * *  **   * *          = (-b - sqrt(D))/(2*a);
* **** *    *  *** **    ** (D < 0)
***   * ** * ***  ***     * 
  ** * **** *  *  *    *  * *  *     *** complex and   **  * ** ** * 
 ****   ** *   *  ***    **** * ***   =  ***** *****      *     **  
      ****  *   * *  **  *   *  ** **    ** = **   **   *  *  ****    ***
 ***   *** ***  ****** ****** 
**      * * **** *    * *  ****  (D > 0)
 * * ** *   ** * *** **  *  
 ***   **    **** *  *** **     *  *** real and * *** *     **     **
  *** ** ***  **  * * *    **** * *  * = ** * * * ***     
  * *  * ***   **** ******** *  *   *  **** = %.2f",x2);
 **** * ****    *   * **
  *   ** * ** **  * *   * (D == 0)
*       **    ** **  *   ** * *
 **    * **  * *** *  **** * **  *   * real and same\r\n");
*    *  * **  * **    * *****   * *  * *   = x2 = %.2f",x1);
** ** *  **  *  *****    
}
answered by (-214 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
    ***** *** ** *
int main(void)
{
 *** ***  * * *****  **      a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
* * ***** ********    * *** **  ****  * *  **   *******  ***    *** **

** * **   ***  *  ***  * ** ** ***  ***  of %.2fx^2 + %.2fx +%.2f = 0 ** * *** *       
 **  * *  * * * *  ** ** **  = (b*b-4*a*c);
   *  * *  *  **  ****  ******* = (-b + sqrt(D))/(2*a);
** *  *      * ** **  *    * **  = (-b - sqrt(D))/(2*a);
*   ** * * *  *  ** **   *     = -b/(2*a);
* ****  *  * ******** * *  * * * **  = sqrt(-D)/(2*a);
  *   **  *** * **   * ** (D < 0)
    **  * *** * ** * *   *** * *
*  * *   *** * * *   **  **   * *  complex and *  * *  *   * ***  *
 **** *  *** **  ********* * *** *    = * *  *   *   *   * **
      * * ** *       * ** ***    * *  ** **  = *** **  *   **** *** **  *  **
  **    * ***   *     * * * ** *
******  * * ***   **** **     (D > 0)
   * * ** * ***  * *  ******
*   ***  **  ******  ** *  *  *** * *  * real and  *   * *  **** 
 ***  * **  *   ****  * *   *   * * *   ***  =      * * * * *** * 
 * ***   **  *       *  ******  ** * ****  * = %.2f",x2);
**** ** * ** ** ***    ** 
 *  ** * *********** *  *  (D == 0)
* ***  *  *  ** * ** *   * *   *
** *  **  *  * * *   * ** ** **** **  real and same\r\n");
*** * * *   *   * * *   *** *******  ** = x2 = %.2f",x1);
 * *  ** * *** *** * ****    *
}
answered by (-214 points)
0 0
prog.c: In function 'main':
prog.c:9:16: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
     x1 = (-b + sqrt(D))/(2*a);
                ^~~~
prog.c:9:16: warning: incompatible implicit declaration of built-in function 'sqrt'
prog.c:9:16: note: include '<math.h>' or provide a declaration of 'sqrt'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
****    *****  *      
# **  *      *    
int main()
{

  *** ***** *    *    *  *         ****** *  **   *** *** 
  ****    * * * *  ****  ** ***   * %f **** *******    ***** * **  * 
*     * *** **  * *   *** = (b*b-4*a*c);
**  * ***  **  **      * = (-b + sqrt(D))/(2*a);
**  *  **  **  * *  ***** = (-b - sqrt(D))/(2*a);
**** **     *  *****  * * **** **
   * **** *     ** * ** * 
***    **   *     *  * *  * **    **   *    * **  **  **   *  = -b/(2*a);
**** * ********  *   * ***** *  * *   * **** *   ** *   *** **  **  * =sqrt(-D)/(2*a);
*  * * *** ** **  * *  ** *   * **   ***  * ** *** * **  ***    ** *  ** * of %.2fx^2 + %.2fx + %.2f = 0 are complex and  *** * **  * *  * ****
 * *  * **** * * * * * *  ** * *   *  * *   **     ***  *** **    *  = %.2f+%.2fi\n", realPart,imaginaryPart);
** ****** *  *  ****  ** ** *   ******* ** * * *** *    * **  ***   = %.2f+%.2fi",  **** ** *  * *  
       *** **** *   *  *  **
*** **  **   *   *  *  ****  *   *  if(D == 0)
*    ***       * ** **  **

 * * *** * *  ***  **  *   *  * *    *  *  ** * *  * ********       * of %.2fx^2 + %.2fx + %.2f = 0 are real and  **    **   *   
** **  *  *   *   *   ** ****  **  * * * **  **  ****** **  = x2 = %.2f", x1);
 *  ** * * ****   * * * * ** *
* * * *  * ***  **** **   
 *    ** *    *  * * *** *  **
**** *    * ***   ***** * ***  **   *******   ** ** *  **     * of %.2fx^2 + %.2fx + %.2f = 0 are real and     ** ** *  *  *****
       * * * ** ***** **   *    *  ***** ****  *  **     ***   *   *  = %.2f\n", x1);
   * *   ********* **   * *** ***  * * **     * *  *****  * * = %.2f", x2);
* *** ***** ** ***   ** * 
** **  *  * *  * **** *** ** *  *   0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 * *****   **   *  
#  **  *  * *   * ** 
int main()
{

 ** **  ** *  *   ***   * *** * ****  **** *   *   **  *  
 * **  ** *** *  *   **    ** *** * %f  ** ** * **   *  ***  *  * ** *  *
*** *  **   **  *  ** **  = (b*b-4*a*c);
* **    *  ** * * *    **  * = (-b + sqrt(D))/(2*a);
      *  ***** * *   *** * * ** = (-b - sqrt(D))/(2*a);
    **   **   ** * **    * *** 
* **   *  ** **  **** *  * * 
*** *  *** * **  *   ******   **  *  **  **** **   **   ** *     = -b/(2*a);
  *** **  ***     ***  * * ***** **   *    * ** ****  *  ** * **** =sqrt(-D)/(2*a);
 ** *   * * * *   *******  * *** ** *  *****      *** **** **   **  of %.2fx^2 + %.2fx + %.2f = 0 are complex and  ****  **** *     *  **
* *    *** * *  ****** * * ***     * *  *      ** *     **          = -%.2f+%.2fi\n", realPart,imaginaryPart);
**** *** *  **   *  * *** * *  *   * * *  ****** *** *  * * **  **  * = -%.2f+%.2fi", *  **     *** * *
 **** ** *** *** * ****  *  *
      *  *** ***  *  * * *** if(D == 0)
    ***  **   **    *   ** 

 * *  * *   ****  *   * *  *** **     *      * *  **  **  * *  * of %.2fx^2 + %.2fx + %.2f = 0 are real and  * **   *** *  
**   *  **** * *  **** ** * **  * * ** *   ** * ****** **   ** **** * *  = x2 = %.2f", x1);
   ** *   ****** **  **  *   
  **   *  ***** ***  **   ** *
 * *   * * *** **   * * **
 ****** ** ****    ****** *  **  ** * ** *   *     *      *  **  **  *  **** of %.2fx^2 + %.2fx + %.2f = 0 are real and  *** ** ******* ****
***  *** *  * * **  * *   * ******** *   ** *   * ****** *  *** * * = %.2f\n", x1);
 ** *  ** *****  ***** * ***   *  *   **** *** ***     * *  **   ** *** *  * = %.2f", x2);
* * **   **   * **   *  **   
    *** *  **  * ******* ***  * ** 0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
  **** * **  ***  ** *    *    * a, b, c, D, spD, x1, x2;
    
* **  **  **    *   *** *** *  *   ** %lf %lf", &a, &b ,&c)==3)
    {
  **  ***** ** **  * *      ** ****     *** **   *    *  - (4*a*c);
* **  * *    *    *  ** *    ****     * *** *  * *****
  **  ***** * **   ** ***   ****  * *** **  *  *  *          
*     **     **     *   **      * *   *** ***** 
** * * **  *    *  *** * * *   *  *  ******  ** *  * ** **    * ***     *** * ***** ****   ** 
 * *  ******** * ** ***  ******** * **  ****  *      ** ** * * **   *  **  ***   (-b+spD)/(2*a);
 **  **  ***** * **  ***      ****  * *** *  *  ** *       * * * **** ***   ****  ****  (-b-spD)/(2*a);
*     ** **   ***      *   * *  *****     * * **** ** *** *   **  *   ** * *  **  ** ** (x1==x2){
   **    *****  **  ********* ******  **  * ** *  * **      *   **   * *  ** *   * **    * **  **  * *  * * ** ** * * *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
** ** * **    * * *  *** *   * * *  **  * * *** *  ** *  *** ** *   *  * * * * **   
  **    **  **  **  ** ***     *      *   *     * **  **  *  *** ** *****   *** * *  * ****  {
  *  ** **   ***    **  ** *      *  **  **  ** * * **  * ***  * * * *  *  ** * *  **     *** ** * *** ** *     ****   **  ** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
*  ** *** ***** ** * **   **        *****  *   ** *** *  * ***** *    *  *** *    **   * *
*** **  ******   ***  ****  * * *** * **  *     * **
 ** *        *  * * *   *    * ***      ** **  *  *          if(D==0)
   *     *  * *** * * *       **  ** **  ****   **  *      *
* **        * ***   **  **  *  *    *  *  * ***        *  *   ** *  * * *    (-b)/(2*a);
 ***    * * * **** ****  **** ** * **  * *  ***    ** * *   ** ***** ** ****** * ** * **
**   * *   **  **** **   **     ****  ***     ** **     ***     * ***    *   ***   
    * * **  *   **  **  ** *** ***  * *** * * * ***    **    **     **    * ** ***    *** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
***  **** *   **    * ***** *    **  *   * * * *  * * * * *******  ******    * *    
*  **  * * *** ** ****  * **  *  ******* * ** **** * ** ***** *    *    *    **     * * 
*   *** * *** *  *  ** * * * ** **   * ****     * *  *      * **** * * ***   *      **
*  ** **  * * ** *  *  *   ** *  ** ***** *** * * * *   ** * ** ******  ***  *  ** **
*  **  * *    * ***  ** *     ***  **** **  * * * *   * *     **     *  * * * **     *  *   *   ** * * ** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
***     *  *       ***  *  *  * ** ** ********    ** * * *   * * *   *****   **   ** **** 
 ** ** * *** *            *  ** **    * * * ** * *  *
* ** **  *   *  * * **   *  * ***  **     ****   *  if(D<0)
**  *   ***    *  ** *   *****  ** *  *  **  ** *** *  *    
 ** ****** * ** * *  *       *        ** **   *  ** *    * *   * ***  **  * * *  (-b)/(2*a);
 **** * ** *  ** * *  **  * * ****  **  * *   * ** *  ** **  *  *   ***** *  **  *** *** -x1;
*  *  * * * ***** *   *** **   **  ******* * ***    * *** ** *** ** * * * * ** *  * * * ***  *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
 *** *   * *  * * *  * ***   *  * *****  *   * **   ***    
   ******* **  *** *** * 
    
** *  **** *  * *** ** * *       *     * ** ** * 
 * *  **     ** * * * **      * * 0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdlib.h>
#include<math.h>

int main(void)
{
 * **  * ** **  * ***  *     ** a, b, c, D, spD, x1, x2;
    
 *  ***    * *  * ** ***     ****  * * **   *    %lf %lf", &a, &b ,&c)==3)
    {
*****  * **    ***        * ***  *  ****        - (4*a*c);
*  **   ***** *  * * **** * * *    * ***** * ******     
    *   **    *** **    * * *   **        ** *****   * ** 
  *   ** *  ** * ****** *** * * *    **  **** *** * ** * *** 
*** ** *     *  **** *    * * *   *  **  ***    *** * ****** ***  * **  *    *
**  *** **  * * **** *** **  ** *     * **    *  *   **** ****  *  *  * *    * *  *  * (-b+spD)/(2*a);
*  **  *** ** ****  *******  ** *** *   ***   *  *   *  ***  ** *** * *   * * (-b-spD)/(2*a);
   *  * ******** * **   ** **  *** **** * *** ***  *  *   *  **    **    ****** *  *   * (x1==x2){
  * *  *** * *    ** ***** *** **    * ** **** *** *** ********  * *** *  ******   * *   ****  *****  * ***   *   *** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
* ****** **       **  * ***** * *     ** *  ** *** ** *** ****     ***     *         
**    ** * * * *   **   *  ** **** **   ***   *** * * * * ***   ** * **   *  *  *  *  ** {
***      *** *  *     * * *  * **  **  * * ******     ****  *  ***  *   *** * **  * ** * * **      *  ***** ** *  ** ****   *** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
* * ** ***** ****   **   **   ******* ***** ****  *******     *      **  ***    * ** 
** **    ** *****   ** **  *   ** ******   * * *  * *
 **      *    * ***   ** *** *   **   * * *  *** ** *  *  *  if(D==0)
 ** *   *** * ***  ** ***  **  **  **  * ** *** ** 
 ** **  ** * * * ** * * * **  ** *   ** * **    ** ****   **  *     * * *  **       ***   (-b)/(2*a);
**  *  *   *** *** **   ** *  * * ***   * ** ** ****  *** *** * *** **  ** ***  ****  **  * 
      *  *** *  ****   * *  * **     *  ** **   **** *  ********   **     * **
 *  ***** * ** * *  * *    ***** ***          *  ****     *******   **   * * * * *** ** *    * *    of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
** ** *   ***** * ****  * ****  * *    ***** * *  **   ***   **  * ***   **  
 * * * **   * * * **** **** *** *  ** **   **   ** * **   ** **   *   *    ** 
*    ****   ***** *    ****  **  *   * * **  **     * * ****** * ***** * *       ** * ***
** ** ***** **  *   ** *  ** ** **** ** *** ***    *  *     ** ** ***  ************
****   *  * *** *   *  ** *** * * * **  ** * * **  ***** ***   ****   * ****  ** * * *   * * **** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
  * *    *   * **  *   **   *   *** *    *   * ****** **  * * *   *** * 
   *** * *  *   ** *    **  * * *** ** ** ***   * *    
**    **     * *    ***   ** **   * *** ***   *  * *  * ** if(D<0)
*   ** ***** ** **    *** **** *    **  **    ** ** *     
  * *** *  **  **  * ****  **** ****    *** *  * *   *** *   **   *  **  * ** * (-b)/(2*a);
***** * *****     **** ***** ** * ***    ** ******** *   ***  *      **  * *  ** -x1;
  *** **  ** **  * *  **  **  ** ** *  **  * *     *     *   *   * ** *** * *      **  **  * *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
*  **   *** * ** *  *  *   ***    **    **   *  **** ***
 ***  **       ****  * *** 
    
*   **  ***   ***** * *  *      **     * **   *   
 * ** *  *  *     ** * * ****  * 0;
}
answered by (-249 points)
0 0
prog.c: In function 'main':
prog.c:8:11: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
     while(scanf("%lf %lf %lf", &a, &b ,&c)==3)
           ^~~~~
prog.c:8:11: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:8:11: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:18:17: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
                 ^~~~~~
prog.c:18:17: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:18:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:21:17: warning: incompatible implicit declaration of built-in function 'printf'
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
                 ^~~~~~
prog.c:21:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:29:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:29:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:34:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:34:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:41:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
             ^~~~~~
prog.c:41:13: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
* ** * *** *** * * *  *** ** ***   a, b, c, D, spD, x1, x2;
    
 * ****   **  ***   * ** * ***  **  * **** *   %lf %lf", &a, &b ,&c)==3)
    {
 * *** ** *  ***  ****  * *** * *****  *  ***  ** * **** *    - (4*a*c);
* *  * *  *** *** * * * * * **** * ***  ***** *  *  *  
 *****  *  ** **** *  ** *     **** ***   * **  * ***    ** *    
   * *       *   ***** * ***   * ** **   ***    **** *  
     * *  ****       * * *  *  ***  * ** ** ** **             *  *   * * *** **  * **
  ***** ******* * * * *** ** * *** *     ** *    * *  * ****   ***   *   ****** * (-b+spD)/(2*a);
 * **** **  **   ** *   * **  **    **     *  * ***  * *******   *   **  *   (-b-spD)/(2*a);
  *** **  **  *** * **    *  *** * **  * **  *   ****    ** **    * * *  *  **    * *    * (x1==x2){
 * * ****  ** **   *  *  *   ***   ***    *** *  ***** **    ** **   **   *  *  **  *  *  *    *****  **  * **        *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
  **    **   ****** *  **  *    **    **   *    ****       *  *  * ****  *** ** * *
  ** **   ***  *  ****** *    **** * *  ***       **    ** ******  * ** *  *        **  {
  * **** ** **   ***  * *** * ** ** * **   ******  ** * ****** **     *****   **   * *  ***  ****  *    **       **   * ***** **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf\n",a,b,c,x1,x2);
*** * ** *** * * **** ***  **       *   * *  * ** * * * *  **      *  * * *****  *  *  ***
****   * ** *    *** * *** **    ** *  * *    *   * 
*** ***** **** *****  ****** * *  * **  * ** *   *       *   if(D==0)
************ *  * **  * **   * ** *   *    *****
* *  ***  ***  ***  **   ** * *  **    * ** **** * ***********   ** *       *   * * ** (-b)/(2*a);
 **** ***** ** * **** ***** ** ***** ** **    **   * ****     ****    *    **   * *  **
*  * *  **** *   *   ** *      *** **  * **       ** ** *  *         ****  *    * 
*  **  ***   **  ** * *  ***  ****  * **   **  *  ***** *****  * *** * * * ** **  * ***   *   * * **  **  *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
* **   *    **  *** *    * **** * ** * *****   * ***   *    * * ** **  ** *** 
 *** * *** **  **  *    ******  **    *  * ** *  * *******  ** * **      * * *   * **  
 *  * *  * **  ***    ** * ** *   *     ***  *  *****  ** *****   *** *  *   *      * * 
* *   * *   **** ** *     *   **  ** **  **  **      *  ***     * * *  * *  
 * ***** * * **** * ****  *      * *  ***** ** *** ** *  ******* ****  *****    **  *   *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
 **  *  *  **  **   ** * *  * * *  **    ** * *****  * **   ** **     *  *   ***** *
        * * ** *        ***** * ***  **  * * **  *
*** *  * * * * * * * *     *   * * **  ****   **  *  if(D<0)
* *  * *  *  *    * *      *  * *  *   * *    ***     **    
 * **** * *  *     ** ** *** * * ******     ***  * ***   **  *    **    *   ***  *  ** * (-b)/(2*a);
**** *  ****      **     *   *   ******  *   *   ***    * * ****** ***   ****     -x1;
  ** * ** * **    **   *        *  **  *  * *  * ********* ***   * *  ** *** * *******  ** *   of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
 ***  * * **  * ** *  *  * *  *** *  * ****** **    **
  ** *  *   * * ***     *  *** 
    
**** * * *  ***** * **   * ****      **   **  * **** **
**    **   *  *  * * ***  * * 0;
}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
*    **  ** * **** **
 *** ***** * * *** *
 * *** ** * *** * 
int ** ***
*   * ********    *  **    ** *  a, b, c, D, spD, x1, x2;
***** * ***  **  *  *   * 
****** **  * *    *    **  *  *****  ***** *** *   %lf   ** ** *** ** **  &b **** **  *
 *    *    {
 ****   *****      *  ** *  ** * *   *    * *** * **   ** * - (4*a*c);
* *   **   * **  ***    * *   ***  **     *   **  ** **
  *** ** *        *  **
* *** *       {
* *   *  ***  *  ** *    *  *  *  ****   *   ** *  * *  **       ****
** *  *  **  ********* *** *  *   ** *    ** *     *  *        x1=  *****    
***   ** *    *      *     * **** *  * *  *     * *** ** *    *   x2=  ***  **    *
** *   *  * ** ** ******** *** **** **   * * * ***   * *    if (x1==x2){
 **   **    * *  *** ***    *** *   ** * * ***  ** *       * *  ****** *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = **       ***  *** **
* ****   ***** **  * * *  **** * ** ****  * ** *     * *  * *  * *** ***** *
***     **** *  * *   * *  *  * *  ********** **** **   ** **  *    else {
 * **  **   * * ** * **   *  *****  ***   **** * ****    * *    ****   ******** *** *  ****      *    * * * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and **** ** *  = %.2lf\nx2 =   *    *  *    * ***
*    ** *****   * * *** ***   ***    ***** *   ** *  ***  * ** *      ** * * }
*  ****  ** * *   *  ** * ***   * * **** *     *   
  *  *  ** **     ** *  **   * ** *   ** ** * *** * **    if(D==0)
*  *  *  ** *  **     {
* ***    *** * ** *    * *  *   ** ***   ****   ** ** ****    *  *   *  * * *  ***  *** *** ***
 *   * *** **  ** ** ***   * ** * *  * * ***          * *  * * * ***      ** ***  *  * 
*          * ***       {
 * ** **    * **  ******   * ***** *  ** ** *  *  *** * ****  *  ***  * *  ****    ****      of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = * ** *   * **  ** 
**  *     ****  *  ** *  * *  * * ** * * *  *  ** ** ** ** * ** **    * *     * *
 ***** *   **  ***     *          * *   ** * *       * * * * *** * ** 
* ** *** ** *  * * **  *    * *   ** **  * * * * **   **    ****   *** * ***   *
*   **           {
   *** ******  * *   **  **     **   * **** * * * *** **  *    **  * **    ** *  **   * **  * *** **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = * **  ** *** *  **
** * * ***** *  * *  * **   *  * ****  ****  *  **** *      * ******* * *  *****  * 
 *    *  ** **** *  *  * **   *  *  * *  *  * *  *
*    **   **      * * * ** **** ** ** **  ** ** ****   ***  *  
   **        *  ***    
            x1=  ****
*  * *      * *  * ***   *    ** x2= -x1;
** * * **  *    ** **  *  *  * **     * * ***          *** * ****   * * *  * * * *  ***    * **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and  * *  * = * ** *  =  * *     ****** *****   *** 
*  *   * *****      ** * **  *      *     **   ******* 
 *** * *     * * ***  *** 
 *  * *       **   *  * ** 
**  ***** *     *   **** *   *** **  ** * * *  *
       *    ** *    * ****  * ***  0;
}
answered by (-249 points)
0 0
/tmp/ccvUqbC2.o: In function `main':
prog.c:(.text+0x6e): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 **** **  * **  * *
* **  *    *  *   **
int main(){
*  * ** *****  ***   **     ***  *  a,b,c;
 **   *  *   ** ***** *   **** D;
    ******   ******* *   * **  * *  *  * %lf *** ****** *  ** *    ***   *
 *    *   **   *    * **  * * *  * *   - 4*a*c ;

** *   ** * * * ** ***  *   ****  ** of %.2fx^2 + %.2fx + %.2f = 0  * *   *  

* * * * * ***  ***   **    * * *   ** * **
*  *     ***  * * **      * *    **     ** *   ** *   ***  complex and   * *    *  *   **
 *  ** ** * * *    *  **  *    *** * *** ** * **** * ******  *   *  = *  *  ** ***    (-b) / (2*a) ), sqrt(-D) / (2*a) );
   *   **   * * *          **  **   ***  ** ***   *   *** *****  ** *  =  *** ** *** * (-b) / (2*a) ), sqrt(-D) / (2*a) );
 **    ** ** *  *  ** *  
 ***  *** * *    ***    * ** *  if(D==0){
*    *      ** * * *  * **     * **  ***  * **    *  * *  *  *******  real and same\n");
 *  *  ** *  * *** *   *  ****  *** *** *** *** *** ** ** *   ** = x2 = %.2f",( (-b) / (2*a) ) );
 *    ** * * * * **  * ** * *   
* **  ** * *  *** *** * **   *   *  
**  * ** *******  **  * *   *   * ** * **** **  *  *  **     ** * real and ** ** ** *     * * **
 ** *** * * ** **** **  * ******** ****  *  ***  ***  ** *  * *   * = %.2f\n",( ((-b) + sqrt(D)) / (2*a) ) );
*** *  *     ** * * * * *** ** ***      * * *   **  * = %.2f", ( ((-b) - sqrt(D)) / (2*a) ) );
  * *      * ** **  * ****

* *    ****** * * *  *  * ***    0;
}
answered by (-116 points)
0 0
/tmp/cc8OPUJA.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccLeUfQ5.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include  **** *  *   *  
#include <math.h>
int main()
{
* *  ******    *****   ****** * **   a,b,c,x,y,d;
  *** ***** *   * *  * * **  *      %f    **** *  *  * ***********  **
     *  *** ** ****   ****  *****   **** 
**** ** ** **   *     ***  *  *    **  *  
 ***  *   ****    **** * *    *  *  * * * *
*** * **** **  *** *** ***   (d>0){
 ****     *  * *  * ***  * *   ** ***** ****  of %.2fx^2 + %.2fx + %.2f = 0 are real and  *  * ** ***     * *
  * * ***  * ************  * * *   **** *     = %.2f\nx2 = %.2f",x,y);
*          *  * *** **    ** **
***** * ****** *   **   ****  * * if (d==0){
**  *  *** ***    * *    **       * of %.2fx^2 + %.2fx + %.2f = 0 are real and **  *  ******* 
*  * **     ** *  * ** * *  ***  **   **** = x2 = %.2f",x);
 * ** *  *  ****   ** * ***   
 **  **   **  *  ** **   ***
   *     * **  * **   **      **  * * * 
**   **   *      * ** *********   *  *** *    of %.2fx^2 + %.2fx + %.2f = 0 are complex and **  * ***  * *** *
**  *   ******* * ***      * ** * *
* *  *    ** **    * *     ******* **   =  * ******* *    * **   
 *** **  * *  *  *** ** *** **** *   **** ** ** =  ***  *   ** * **
* * **** * ***  ****** **

    ***  *   * *** * * *        0;
}
answered by (54 points)
1 0
/tmp/ccheVQNV.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccJPGNPl.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.70.50.51
©2016-2025

No related questions found

12,783 questions
183,442 answers
172,219 comments
4,824 users