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

0 like 1 dislike
9.4k 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 | 9.4k 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:172.69.58.233
©2016-2025

No related questions found

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