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

0 like 1 dislike
15.3k 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 | 15.3k 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:172.71.120.163
©2016-2025

No related questions found

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