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

0 like 1 dislike
11.9k 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 | 11.9k 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:172.69.59.81
©2016-2025

No related questions found

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