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

0 like 1 dislike
5.3k 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 | 5.3k 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:172.69.6.217
©2016-2024

No related questions found

12,783 questions
183,443 answers
172,219 comments
4,824 users