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

0 like 1 dislike
14.9k 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 | 14.9k 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:172.69.59.82
©2016-2025

No related questions found

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