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

0 like 1 dislike
7.7k 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 | 7.7k 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:172.70.126.140
©2016-2025

No related questions found

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