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

0 like 1 dislike
19k 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 | 19k 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:104.23.197.65
©2016-2026

No related questions found

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