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

0 like 1 dislike
2.9k 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 | 2.9k 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:172.70.178.152
©2016-2024

No related questions found

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