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

0 like 1 dislike
8.6k 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 | 8.6k 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:172.71.254.84
©2016-2025

No related questions found

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