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

0 like 1 dislike
18.3k 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 | 18.3k 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:104.23.197.64
©2016-2026

No related questions found

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