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

0 like 1 dislike
9.1k 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 | 9.1k 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:172.69.58.188
©2016-2025

No related questions found

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