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

0 like 1 dislike
13.7k 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 | 13.7k 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:172.70.80.21
©2016-2025

No related questions found

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