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

0 like 1 dislike
5.3k views

Write a program to find roots of a quadratic equation

A quadratic equation is a second order equation having a single variable. Any quadratic equation can be represented as where a, b and c are constants ( a can't be 0) and x is unknown variable. 

寫一個找二次方程的求根程式

For Example

 is a quadratic equation where a, b and c are 2, 5 and 3 respectively.

To calculate the roots of quadratic equation we can use below formula. There are two solutions of a quadratic equation.

使用下列公式:

x = (-b + sqrt(D))/(2*a)
x = (-b - sqrt(D))/(2*a)

where, D = (b*b-4*a*c) is Discriminant (判別式), which differentiate the nature of the roots of quadratic equation.

For the complex result (複數根):

realPart = -b/(2*a);
imaginaryPart =sqrt(-D)/(2*a);

Note: We have used sqrt() function to find square root which is in math.h library.

 

Example input 1:

1 2 1

Example output 1:

Roots of 1.00x^2 + 2.00x + 1.00 = 0 are real and same
x1 = x2 = -1.00

 

Example input 2:

1 -3 2

Example output 2:

Roots of 1.00x^2 + -3.00x + 2.00 = 0 are real and different
x1 = 2.00
x2 = 1.00

 

Example input 3:

1 2 2

Example output 3:

Roots of 1.00x^2 + 2.00x + 2.00 = 0 are complex and different
x1 = -1.00+1.00i
x2 = -1.00-1.00i
[Exercise] Coding (C) - asked in Chapter 5: Selection Statements by (5.2k points)
ID: 28934 - Available when: 2017-10-26 18:00 - Due to: Unlimited
reopened by | 5.3k views
0 0
We will continue this question in few days
commented by (12.1k points)
0 0
Everything is fixed. Enjoy your time with The Judge :)
commented by (12.1k points)
0 0
ANNNNNNNNNNNNNNNNNNNNNNNNNNGRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
commented by (-249 points)
0 0
Your code has newline at the end sometime. You learned this lesson many times!
commented by (12.1k points)
0 0
After i correct the newline in my code,there is still wrong output.However,I had run the program in Codeblocks.The output is still as well as the result. Seeking for help.
commented by (-214 points)
0 0
your output lack of 1 space at line 8 when print out "Roots of ...". Please be careful with all small details when working with online judge
commented by (9.9k points)

56 Answers

0 like 0 dislike 
Hidden content!
  ** *****  **   * 
*      *    ***  *** *
int main()
{
***   *  *****    **    * *   a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
* * * * ** * ***     *  * ****       **  * **    **  **    *** **  *  

       ** * *   ****   **   *  ****** * *    of %.2fx^2 + %.2fx +%.2f = 0 are",a,b,c);
*** ***      *  *    ****   = (b*b-4*a*c);
 *  **   * * **  ** ***** *  = (-b + sqrt(D))/(2*a);
*   ****** * *   * ****   * * = (-b - sqrt(D))/(2*a);
** * ** **  *****  ***   *  *** * (D < 0)
*** **** *****  ** * * ***
**** *      * **    *** ***** * ******** *   complex and *     **** *  **
***** *    **   **    **     *  **** = ****  *     * *     **** **         ****
*   *  *     *  **  *   **     *   **  * =  ** **   *  ** * **   *****   *
*    *  *** * ******  ****  
 * ** * *    **  ****  ** ****  (D > 0)
*  ***    *  * *   * *
  ****** * **   *** **    *** **** real and  *   **  *** *****   
  * *** * **  ** *  **   *** **  *  *** **** = *** ** *  * *
** * **  *** * * **  *   **    *** = %.2f",x2);
   ** **** ** *  ** * *  *       *
    *   **  * *       * *** ** (D == 0)
**    ** *     **   ** *  
** *  ***   * * *     *** ***   ****  **   real and same\r\n");
**  * ** *  ** *  **  * **   ****  *  = x2 = %.2f",x1);
 *  ** * *  ** *   **** *  **
}
answered by (-214 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
*  ******  * * ***
int main(void)
{
*  **       *    **  *  *   a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
* * ***     * ** **** **  *** *** *    ** ** *** **** ****** *  *   * * *  

  * **  *  *   *  ** *  *   ** * * **  **** of %.2fx^2 + %.2fx +%.2f = 0 *   **   * * *
 *  *    ***  ****** **** **  = (b*b-4*a*c);
*    *** ***** ***   ** *    * = (-b + sqrt(D))/(2*a);
**  *****   * * ** **  **   ** = (-b - sqrt(D))/(2*a);
* * *********** *  ****   ** = -b/(2*a);
***** * *   *** * *   * *    *** *  ** *    = sqrt(-D)/(2*a);
   **** *  * ***  *   *** *   (D < 0)
***  **   *  *  *** *  * 
 * *  * ** ****  ***  *  * **    *****  complex and  ****  ***** * 
*   * * ***** * ********  **    **  *  ** = ** *  *  ** **   * *
 * *****   * **   **** * * * ***    ***** *  = ***** *  ** * *      ***  
**      ** **    *** **  *  ****
 * * ** *     ** *   *  **  ** * (D > 0)
   * *  **  *  **    *   *  *
*    *  *   ***   * * * * ** ** * ***  *     real and * *  *** **    *** 
  ***** * *  * ** ***  ******** ****   = *  ** * ** **  **
*  *    *  * ****   **** ** ***** *     = %.2f",x2);
 **  **     **  **  **  
*  ***   *     *   **  * ** (D == 0)
 ***** * * * * *  **  * **** *
 *  *   *** *   *   * * ****  **** *  * real and same\r\n");
** **      **** * **      * **** ***  *  = x2 = %.2f",x1);
 ****        *  * *  *   *** *  
}
answered by (-214 points)
0 0
prog.c: In function 'main':
prog.c:9:16: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
     x1 = (-b + sqrt(D))/(2*a);
                ^~~~
prog.c:9:16: warning: incompatible implicit declaration of built-in function 'sqrt'
prog.c:9:16: note: include '<math.h>' or provide a declaration of 'sqrt'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 *  ******       *
# * **  ***  ***   ***  
int main()
{

   *  * * ****     *** ** ** *   ***  * ****    ****   
* ****   **   ********** **  *   *  **** *** * %f *      **   ***   *********  * ***
  *   * ***  ** * * ** *  *    = (b*b-4*a*c);
 ****      * **  **  *  ***** = (-b + sqrt(D))/(2*a);
 * **     *    **      = (-b - sqrt(D))/(2*a);
* *  **** *  *  ****** * ***  *   **
 ** **  *     ***    *****    
       ** * * *  *    **  ** * *  ** **** * *    *  **** ******* = -b/(2*a);
 ** * * ***  *** *  ** **********   *** ** * *        * *    *** =sqrt(-D)/(2*a);
**   * * * ***  * * ** * ** * **  **  ******* *     **     * *  *  *   of %.2fx^2 + %.2fx + %.2f = 0 are complex and * * ***  ***** *  **
***     ** **** *** *   ***    *  *   * ** **  ********* *  *    * ** = %.2f+%.2fi\n", realPart,imaginaryPart);
**** * *  *  *  *******   ***** * **** *  ** * * *   ***** ***   * = %.2f+%.2fi", **  ****  **
 * ***      *  ** ** ***  ** 
* *     * * ** * *    ****** * if(D == 0)
 *** * ** * * * *   * *  

  ** * **   * *** * ****   ** **  **   *** *   * *  ***  ***  * *  of %.2fx^2 + %.2fx + %.2f = 0 are real and *  *  *  * * **     
****** * * * *   **   * *** ** *  *      ***   ** * ***  ** *** *  = x2 = %.2f", x1);
   *****  *****  * * **   **  
*  * *    ** *  ****   * **
**  *   ** *** ***** *** * * 
**  * *  *  * *****    * ** * *   **  ******  ** * * *  ***** of %.2fx^2 + %.2fx + %.2f = 0 are real and  ** **  *   *   **
 * **    ** ****      * ** ***  **  *  *  **   * * *  *      ******** ** = %.2f\n", x1);
 *   *  ***  ***** * * *   ** ***  * ***  * *  ***  *** **   **  *  *  = %.2f", x2);
* *       *   *  ******    ** *
 *    *  *****  * **** *   *** * *  0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
   **      *** ***   
#  ******   ****  ****
int main()
{

          **  * *  ** ** **    *  **  *    ** *    *** *** * ****
 **    ** * ***     * * *   ** * ** %f *  ***  * * ****  ***** ***  *  * 
 **** ****  * *  *     *   = (b*b-4*a*c);
 *  *   * * ********   *  * *   = (-b + sqrt(D))/(2*a);
  ** **  ** *  **  * **   = (-b - sqrt(D))/(2*a);
 *  * * * *   *    **** *    *****   
 *****   ***    ** ***  ******
*    ** * ** *  * * *    *           *  ** *  *  ****** = -b/(2*a);
*    * **    * ****** *****  *** *     *** ***   ****    *  =sqrt(-D)/(2*a);
   **  * **    *  **  *** **     *  *****  * * ***  *  *  * *** *   of %.2fx^2 + %.2fx + %.2f = 0 are complex and **  *    *** **
*     * **  ** * ***  *  * *** ******  * ****** *   * *    * **  ** = -%.2f+%.2fi\n", realPart,imaginaryPart);
 ** * ***     * * *  ** *** *   *** ***** ** ****   * * ***   ***** = -%.2f+%.2fi",  **        *  *  *
** * ****  *  *  ** **  * ** 
** * *** ****  *  *** ***      ** if(D == 0)
* * *  *  * *  **   

**  ******  *  * ** *  * * * *** ** ***** *** *  *   ****   * *  *  *   of %.2fx^2 + %.2fx + %.2f = 0 are real and * * *  * ** ** ***  
* ***** **  * * **   **   *** **  *** *    ***** *  **    ***    = x2 = %.2f", x1);
 ** **** *** * * *   ** ** *
    ** **  *   *  **   * *  ** 
**** * * * *  **  *  **** ** 
 *  * *******  *    *** * ***  * *  ** ****   *** **   *   *   *   **  *  * of %.2fx^2 + %.2fx + %.2f = 0 are real and *** *** *   ***  *  **  *
  *  **   ***    ** *  *  **           *  ***** *     * *******      *  * = %.2f\n", x1);
** *  ** * *****   ***    **** * *** * ** *   ****  ** **    *      = %.2f", x2);
 ***   **    *  **  ***** ***
  *     **  ***  * *** **  * **  0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
*   **** *  * *  **    * ***  a, b, c, D, spD, x1, x2;
    
*  **   ** *  *** ******* *****   * *    * %lf %lf", &a, &b ,&c)==3)
    {
 **      *  *  * *    * ** ** ***  *** ** * **  *   - (4*a*c);
   ****    * *   * ****   ** *** ** **  * * * ** *  ** 
 ***** * ***      **    * **   *     *  **   * **  *  ***   * 
 ***    *** **** *  *    ** *  *   * *    *  * * ***  * **
   *  ** *****      *   * *****    *** *** ** *  **   * **  *** *     * ** *****   * * **
*  *     **** ** * * *   ***   *   ** *  *     * **   ***  *  *** *  ** * *** *  (-b+spD)/(2*a);
 **   *   * **** **  *  **  * *     * ** **** ****  * ******   * **   ******  * (-b-spD)/(2*a);
       * *  *****  ** * * ****  **  **   *  *  *    *    ****  * * ** **     *    * *   (x1==x2){
* *  *** * ** * ***   *     *  ***** **  * ****  ****   *** ***      *  * ** *** ****  *     * * * **   ***  *  ** **   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
*****   ** * ** **** **  *** *  * * * * ** *** ** **  *** **   *  * *******    ***   ** *
      ****   ** ***   * ***   * **      *     ** *   ****** *  *   **  ** *** * {
*   * **** ** * ***    *** * **      * * ** **  **   ** *  *  *     ******* **  **  ** * * ******  *** * *    ***  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
** *  * *  **   ***   **       *** *** **** * ** ******   **  *   *  **
       * ** ** *   *      * **  *  * *   * * *
  * *  *  **   *        *    *** ** *   ***     ** *  if(D==0)
  * ****    ** ** * ****     **   *  **   *  *  *** **
** ****  **  * ** *  * *     ***** ** * *     *  ******** *  * * *** **  *  ***** *** *  *** (-b)/(2*a);
*  *   ****  *   *  ***  * * **** * **    ***** * **  ** ***  **  *    **  * *  ** *  
  ** *   ** ****    * * *  *  ****  *    * **   *    *** * * ** *** ******** **   *
 * **  *  * *  *   *  *****   *   ** * * * * *  * * * ** **   ***   *    **** * * *  **  *  * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
    *      *  *    **    **   *    **  **** **** ** ** **    **   *   *    * *** ***
***   *   **    *     ****  ****  ****  ** *  *****   ******* ** *  *** ** **
 *** * ** *  *   **** ***   *  * ***   * *  ** ***** *  ** **   *** *  *****  ** * **** 
  *   ** *    *   * ***  ******    * ** ** * * *  * ***  ****   *** **** * *  * *   
******    *      *       ** *** * *  * **   **** ** * *    *********   * *     * *  **  * * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
*  *      * * ******  ***  * *** * ** **   ******   ***   ***  ** **** * * * *  *  
 ** *  * *    **  ****** ** *  * * *  *      *** *  *****     
* *    *   ***    ***    ** **  * * **  *  *  ***  *   * if(D<0)
*  * *    ** *  *  *  *  *** ***      **   **    
 *  **** * * ** * ** *  ***  ** *  ***  * *** **   *****   * *  * **     *     ***** **  (-b)/(2*a);
* ** *  *  **         *** * *   *** * ** * *     **  *  *   * **** * *******  ****** ***** -x1;
  * *   ***   ** *    *  *      *   * * **    *** *     *    * * **  * * * ** ** ****   * *** *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
 *   * *  * **** * *    *    **** *** * * *  ** *** * *
   * ** *  **** ** * ***    **
    
    *      ***      ** * * ** * * * * *  * * **  *  *
    **  **  ** * *   ** **   0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdlib.h>
#include<math.h>

int main(void)
{
 **   ** **      **  **  *  a, b, c, D, spD, x1, x2;
    
*  ** ***   ***      **  ********* * *** %lf %lf", &a, &b ,&c)==3)
    {
 ****  *  *****  *   * *** *  **** * * ** ** * ***  ** - (4*a*c);
***   **  **   ***    ** *  *  * ******   *** *  
  ** *     *****     ** *  * **   * *** ****  **  *   * *** 
 *** **    *     **** ***   **  * *     *  * *   *
* ***  *      *     ***    * *   **        **  *** *** *  *** *  **  **   * * *****    **   
      ***    ******  *   **  ******** * *  * *** *  *  * ** *  *   *  **    **  ***** (-b+spD)/(2*a);
 * *  *  * *  ***** *** * *   *   ******      ** ****   * **  * **       **** (-b-spD)/(2*a);
 ** * *   *    * *  ***  *** *  **** ***  * * *  **   **  *** **       * * ** ** (x1==x2){
* *  * ***** * **     **     *    * * *   *     *  *   ***   ***** **** * * ** *  *   * ** **  ****** * *   ** * **  * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
**** * ** ****  * *   *   ****  **  * *  *    *****  **** ** *        * 
* * * **** *    **   **   ** **     *  * ** ** * *****  ** *   * * *   * *     *  *** {
**    ** *   **    **   * *  ** *   **  ** *   **  * *  ** *** * *   *  **    **   *  * ****  **    **  * *   **   *** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
 *  *    ******** *** * ***  * * *    * *  **   * *    *  ****   *  ** *** *  * * * ***   
*** ** * * * ***  ***** ** **       **  **** * *******   
*  *******  *  * **** *   *     **  *** *     * *  *** **   *     if(D==0)
    *   **   *** **** **      **    ** *** *** * *  * *  * 
*     ** * *    * **   * * *** ** *** ** ** ****     *  *    **** ******** *** ***       (-b)/(2*a);
   * ** *    *** **  *****   **** * * *  **  *  *  * * *** * * **  **  * *** * *  ***  
* * *   *  ***  ** * ***   * ***   *    **  ****** **** ****   ****   ****** ** * *    * 
    **      *** *  *****     ***    *   * * **** ** * *** **  *****        **  ****  **   * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
 * ********    *   ** * * *  *     *  * ******     *  ********** *  ** **
*    ***** **   * * *     *   * *******     **     *** ***** *   *** * * * * **** * *  *   **
 **  ** * *   * ***  ***  **   *   ** *  **  ** ***  ****  *  **  **** ***  ** 
****** *   ****** *    *   ***** * *** ** * *  ** * * ****    ***   *  ***  ** *    
** ***  *  **  *  * **  * *** **  * * * * ***** **** *********  ****    ****   **     ******     of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
 *   * * *   ******* * * * *** **  * *   * ** *    ***     *  **  * ****  *
   **  * **** *  * **** *  ***  *  *   *   *  *   ** * * *  ** **
   * *******   * *** *  * ** *  *** * *  * *         * * *  * * if(D<0)
 * *     *** ** *****   * ** * *** **      ** * * *  *    
 *  **    *     * ***** *** **     *       *   ***** * *  * *  ** ** *   ***  (-b)/(2*a);
** **    ** **   * * *  * ***  *   *  * *  * * * *    * *** *    ******    **  * * * *  -x1;
  *** * * *  * ***  **  * *** * *  **   * *  ***** ***** ***   *    * * * *  * * *  * *****      of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
   *     **  * *** * ** **  *** **      ***  * ** *  * * 
 ** ***  ***** * *  **** **  *
    
* * **    ** *****     **  *    ***** ** * 
  *****  * *  **** **** *** 0;
}
answered by (-249 points)
0 0
prog.c: In function 'main':
prog.c:8:11: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
     while(scanf("%lf %lf %lf", &a, &b ,&c)==3)
           ^~~~~
prog.c:8:11: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:8:11: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:18:17: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
                 ^~~~~~
prog.c:18:17: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:18:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:21:17: warning: incompatible implicit declaration of built-in function 'printf'
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
                 ^~~~~~
prog.c:21:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:29:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:29:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:34:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:34:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:41:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
             ^~~~~~
prog.c:41:13: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
  * * **   * *     *  * *** * * * a, b, c, D, spD, x1, x2;
    
*  **   *     **** * ** *  ** **  ** *  ** * %lf %lf", &a, &b ,&c)==3)
    {
*   **   * *     *       *  **  **    *    **  *  *****   - (4*a*c);
 *  * *      * *** **    **  *    ***    * * *
* * **    *  **     * * **** *****    * **       * * ***      **** *
*  ******   *  *   *  **        ** ** *      * *    **
 *  *  * ***     *  ******  **  *   ** * **    **  ** * *  * ** *** *  *   **   *  
** * ** ***    *****   *      *   *** * *      * *  ** **  * ***  *  **  ** * * * * (-b+spD)/(2*a);
 ****  *        * *      *  *     * *********  *  * * *   *         * *  * ***  ** (-b-spD)/(2*a);
***** *   *   ***   ** *    **  *** ***  * *   ** **  *    * **** ***  *  **    **  *  (x1==x2){
*  *  *   ******   *   **** *******  ***  * *  **  ** ****  * **  *   ********** *** ** * *  * ***  *   **** * **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
**   ** **     * ** *       ** *   *  * *    * * **  *  ***  *** *** ****   * *   
**  **   ** * ** ****  *        * *  *  * * **  * *  *******   *   * * ****  * **  {
 *   * * ****          **    ** ***  ** **   *** * ** *  *** *** **  ** *   ** ***   *   * ***  **  ** * **  * * *   * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf\n",a,b,c,x1,x2);
*** **   ****      ***  *   * **  * * *      *  *** ******* *** *  * **       * 
** *  * * ***** * *  * * * * ******* **  ***** ** 
****   * *  * **   **  **  *  *   ***  * ***  *  *    * if(D==0)
** *  *       * *  * * * **** *   * * ** ***  *   * 
*  ** * *   **  ********* ** ****  * *** **  ** ** ** * * **      ***  * * ***  * * (-b)/(2*a);
   ***** **  ***** ****** **    ****** ****   * *     ******  ***  *     *  *   *   ** 
 **** * ** * *   ** ** *  * ***  ** * ** ****  *  *  ** * * **** *** ** *** *   
       * *   ** ** * *  ***  ****   *   * ** * * *  *  ****** * *   ***  * *  ***    of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
  *   *     * * *  **** **  **    **  * *   *** **     ******    * *  *** ** *     ** 
** * **** ****   * **  *  ** *  *    *  ***   ** ****   *  ***  * * *** *  ** * **
**** **  *   * ** ** * ** ***** **  **   * *** **   ** ***   **  * * * ** * **  **
  *  **** *  ********  *  *****  * ** *** *** ** ***    ** * * * *  *       **  
**  ** *  *  * *** *****  * * *   **  * *    * * * *   *  * **** ** * ***     * *   * *   * ***    **  *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
     * *** * *****  *    ** * * ****    *  *   **  * *   *    * ****   **** ***   ****  
          ** ** ********    *  *  **    *   ***      * *    
 *     *   * **    ** ** *      **   **  *   ******* * if(D<0)
 * * * *  ***** ****  *** **   **** **    ** ***     
** ***  *  * ***** * **     *     **  *** * * * ** *  ** * ** *  ********  **  * (-b)/(2*a);
**   ***   * *   *    ****     ** *** * *  * *   * * ****** * *  ******  * * ** ** -x1;
  * ***  ** **     **  *  **** **    * *** *****   **  **** * *   *** * ** ** *        *   *  *   * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
**  *** * ***   **  **  * *    ***** *  *  *  * * *******
*  * *  *   ** *** ** ***
    
***  ****  * *******   **  ** * * * ******  *  *** 
*** **** **** ** * ** * * * ** ***   0;
}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 *  ** ***     *  *
******  *  ** *****  ** 
  ** *   * **  *** *  *
int  * *   
*  *   * * *  * * **** **    a, b, c, D, spD, x1, x2;
 *** * *** **** *   ** *** *** 
 *  ***  *  * * *    * *  ** * *  * ** **  ** *  %lf ** **     *  ***  &b  **    * ** *
*  **    {
 *  **   ***  * * * **  ****  **  *   * *** ** *** * * - (4*a*c);
 *** **  **** **   *   * **  *** *  * **
 * *  *        ** *  ***
*  *        {
    *    **  **  *  *** ***  *  ** *     ****    **    *   *       * *   *  
    ***  *   ** ***   **   * *  * **  *   ***   *   ****    x1=     * ***  *
*   ** * *** **** *  * *******  *  ***    ***   * **    x2= * *** ****  *
 ***  ***   *        *  * * ***  *  * *** *   * *    if (x1==x2){
*    ***** ***  **  * *  *  * **  ****  * ** *  *  *   ***         **  ** ** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 =      ******  * *  
     * *       ** **  ** ** * *     **   *  ******* *   *  **   *   * **       ***
*  *   *  ** ** *  **    *   **** * * ***     *   *  *** ***  ***   else {
  *  ** * * * **   *  ** **    * *  *  * ** ** * ****      *** *** *** ** ***   ****   *  * * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and  *  ** = %.2lf\nx2 =      * * ** * *** *
* ******  ***         ** * *   ***    ******* **** *   *  * *        **** *  }
 *  *  *******   ***     * *  * *********** **** *     
  *    *     * * ** ****   ***** ** ** ****  ******* * if(D==0)
   **     **  *    *****     {
 ** *** ** *   **  ****  *   ** *   * * **   *   *   * **** ***   ** *   *** * *** *  ****   
   *** **** * *  *   * * * *  *  * * *   * ***** *   ** **** *    ** *    ** *    * *  *   
  ***    * ** ** *       {
**    * **** *  * *  ***  ** *  * ** **   * **   *** ****   * **  *  ** **  ** * ** **  * * *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 =  * **   **** **      
* ***  ***** **** * ****    ***  * ** *  *** *** ** *  ** *  * *  ***    ****  *** 
     *  * *    ***  **    ** ** *  * ****   *  * * ** *  * **  **** *** *** **  **   *
 **  *    *         *  * *  **           *** **   **  * ***  ***   *  ****** *    *    * 
 * ***             {
 *  * *  * **** ****  *  *    *   * **** *    *  **  ****   * **  ** ** *        *   *** * *  * * **   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = ** * *   *** *    *
 **  **   ***  * *  *   *      *  **    ****  *****  * ** *  * *       *  * *   ******* *
  ** **  **** * **   *         * * ** *   * **** 
*** ** ****   *   ********  * * *   * *  * *   ***   *   *   *** 
* *  *            *     
            x1=  **    
* ***  *     *   **  * *  *  *** ** x2= -x1;
    *   **   *** *****   *  ****   ** **** ****     ****  **  **  **  ****  * *****  * * ***** **  *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and  *    =   *    *  * =  ** * * *** *  * * **  *   
***      * *  * * * *****   *  ****  **     ** * **
* * **** * *  **  *  *** ***   
  *  * * ** ****  *       
 ****** ******     ******  *  ** **   *    **    **
*   ******  * * * * * * * **   ***  0;
}
answered by (-249 points)
0 0
/tmp/ccvUqbC2.o: In function `main':
prog.c:(.text+0x6e): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
  **** ****** * ***
** ****  **   * * * **
int main(){
****   ****** * ***  ****  ** *  a,b,c;
 *****  * * *      ****  D;
  *   * *   * *  ** ** * **********  %lf  * ****     ****  * *** * * *  ** *  *
  **  ***** ** *    *  *  *   * *   - 4*a*c ;

 *  ** *****   ****  * * * * *****  ** ***  **   * of %.2fx^2 + %.2fx + %.2f = 0  **** *  *  

*  ** * *** *   *  *** * * *    *  *    
 *        * ******* * *   **** *     *  * ** **** **  ** * *** ****  complex and   * *  *  ** **
 *  ***  **  *   * ** * * * * ** ** ****  *   *   ***** ***   *    =  *      *      * *  (-b) / (2*a) ), sqrt(-D) / (2*a) );
   *  **   * *   ** *  ** * **  *  *  **      * *  * *       ***        =  * *  *** ** (-b) / (2*a) ), sqrt(-D) / (2*a) );
    *     **     * ***
** ** * ** ***  ****  * ** ** if(D==0){
*   * ** *   *  *** * * *    *    **   *  * *  *******  **  *  ****   **    real and same\n");
 ** *  **     *  *** *  *     * *** * * **** **** *     ** = x2 = %.2f",( (-b) / (2*a) ) );
* ****  *    * ***   ** 
*       *     **** **      *  ** 
*  *  *  * ***** *******   ** *   *    **** *   ** *   * **    * * ** real and  **  *   ** ** * 
*  * * * ***      ****  *    * * ** **  ***  * ** ** ** *  ***  = %.2f\n",( ((-b) + sqrt(D)) / (2*a) ) );
*  *    *   **  ** *  ** ***** *  * **  *** **  ****   *****  ***  = %.2f", ( ((-b) - sqrt(D)) / (2*a) ) );
 *   * *  * ****         **** 

*** ** *   **  *** * * ** * * * * 0;
}
answered by (-116 points)
0 0
/tmp/cc8OPUJA.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccLeUfQ5.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include *  *  * * *   **
#include <math.h>
int main()
{
**    *  ***** ***** * *** * a,b,c,x,y,d;
**    *** ** **** ** ** ** *  *  *     %f  *  *  * *   ***  * * * ***     
*  * * **** **** * * ******         ** *
  **  ***   * *  *** ** ** *  ***  *
* ***  *   ** *   *   *****  * * * * ***  
*** * **** *** ** *     * (d>0){
******* **  ** ** *   ********** ******    *  of %.2fx^2 + %.2fx + %.2f = 0 are real and   * * *   *** 
* *** **   *  *   * *  *  *** **** *  = %.2f\nx2 = %.2f",x,y);
 ***  * * *** * *  ** ** **
** *** *** ** *  ****  *  * if (d==0){
* * ** * ****  * ***     **  *   *    * of %.2fx^2 + %.2fx + %.2f = 0 are real and  *****   * *  ***
*  * *  * ****   *   *  **** * *    *** *** = x2 = %.2f",x);
******  *   * * ** **       * * 
* *       * **  * **   ** *
    **  ***   *  **  * **   *    *  
 *  * *  * * *     *   * * *  *  * * *  * of %.2fx^2 + %.2fx + %.2f = 0 are complex and  ***  * ** *****  *
  ** *****   **  * ***  *** *  **
  * *   * **  *  ***  *     * * *  ** =   * ** * ******    * 
*  ***    *  * **   * *    **    ** =  *   * *****  *
* * ***  * ** *** *   * * *

** **    ****  *** *** * *** **  0;
}
answered by (54 points)
1 0
/tmp/ccheVQNV.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccJPGNPl.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.58.39
©2016-2024

No related questions found

12,783 questions
183,443 answers
172,219 comments
4,824 users