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

0 like 1 dislike
9.1k 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 | 9.1k 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:172.70.100.36
©2016-2025

No related questions found

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