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

0 like 1 dislike
7.9k 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 | 7.9k 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:172.71.254.221
©2016-2025

No related questions found

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