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

0 like 1 dislike
12.3k 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 | 12.3k 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:172.70.162.136
©2016-2025

No related questions found

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