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

0 like 1 dislike
8.6k 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 | 8.6k views
0 0
We will continue this question in few days
commented by (12.1k points)
0 0
Everything is fixed. Enjoy your time with The Judge :)
commented by (12.1k points)
0 0
ANNNNNNNNNNNNNNNNNNNNNNNNNNGRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
commented by (-249 points)
0 0
Your code has newline at the end sometime. You learned this lesson many times!
commented by (12.1k points)
0 0
After i correct the newline in my code,there is still wrong output.However,I had run the program in Codeblocks.The output is still as well as the result. Seeking for help.
commented by (-214 points)
0 0
your output lack of 1 space at line 8 when print out "Roots of ...". Please be careful with all small details when working with online judge
commented by (9.9k points)

56 Answers

0 like 0 dislike 
Hidden content!
 *** ** ** * **  * *
* ** *  ** * *** *  **
int main()
{
 **  *** * *   * **   **  *  *  a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
   **    ***  * **  *    ** *** **   **  * ****** *****  *     ***   *

     *   ***   ***** * **  * ***   **   *** ** of %.2fx^2 + %.2fx +%.2f = 0 are",a,b,c);
 **  * * * ****    ******* *  * = (b*b-4*a*c);
  * *  ***  ***   *  * **** ** = (-b + sqrt(D))/(2*a);
*  ** *  ** * * * ** **** = (-b - sqrt(D))/(2*a);
  * ** ********** *  *   * ***  *  (D < 0)
* *** **  * *   ******    
*  **  ***** * **** ** * **  *  * *      complex and *** **   * * *   
*   ** **   **  **** **  *  *  *** =    **  *     ** ** *****  ** **
*   * *********  * *   *  *   **  * * * ** = ***  *   * *** * ****  ***** 
***  ** *  * * * **** *   * 
*   *   *  ** * *  *  (D > 0)
 *** *     *****  * *  *  
  * * *   *  *  ** *  *  ** **** *    *    real and *    ** *** *  ***
  * *****  ** ** ***  *  * **   *** *** * ** =    *** * * * * *  
 * *     * **  *  ** *  ** ** *   * **  = %.2f",x2);
 * *** *** ** *  ********
* **  *     **  *      *   ** (D == 0)
 *  * *   * **  * *****   *
* **** *      ** **** **  **  *  real and same\r\n");
 ***    *  ***  ***   ** ** *** * **** = x2 = %.2f",x1);
 **   ** *  **  ** **    * 
}
answered by (-214 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
    **     *   ****  **
int main(void)
{
*** ***       **   ** * * **   a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
* * * *         *  * *  *  *  ****** ** ***  *  *  **   ** ***  * *

 * ****  **  *  *   *  ******** ***    ** of %.2fx^2 + %.2fx +%.2f = 0   *  *******
*  *  *  ******** ***  **    * = (b*b-4*a*c);
* ** *** ** ** *  *     **  = (-b + sqrt(D))/(2*a);
          ***   *   **    ***  * = (-b - sqrt(D))/(2*a);
      **  *     *   * *** * = -b/(2*a);
**** *  **  ****   *  *** * * * **     = sqrt(-D)/(2*a);
 *** *   * **  ***  *   (D < 0)
*     *       ** **  ***   * 
 *   *   ** *** *** ** ****  *      *  complex and * *   *       ***   
    ***   ***  *  **** ** *   *** *     **  *  =     ** * **    ** ***  * *
*** *** **   ** *  *  *  * ** * **  =  *  ***  ***   **  ****     *
 ** *   ****  * *** **    
 ** *  ***  * *   *  ** *  ** (D > 0)
  * * * *  *  ***  ** ** *     
***  ** *   ** *** * * **   ** ****     real and * **** ** ***** 
 *  ***   *** ***     ****** * ** **  * =  * ***  *  * *
***** * *   ****  **** ****   * * **   ** = %.2f",x2);
* * * ***      *      * 
 ** *  * *  * * * *  *  *** (D == 0)
*   ** * **  *  *   * * ****
 * *****  * *      **  **   * *** ***  real and same\r\n");
*  ***** * ** * *  *   ** ***  * ****   * = x2 = %.2f",x1);
 * **  *      *   **  **  
}
answered by (-214 points)
0 0
prog.c: In function 'main':
prog.c:9:16: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
     x1 = (-b + sqrt(D))/(2*a);
                ^~~~
prog.c:9:16: warning: incompatible implicit declaration of built-in function 'sqrt'
prog.c:9:16: note: include '<math.h>' or provide a declaration of 'sqrt'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
  ***   ** *** *  
#  ** *  **  *  *   *  
int main()
{

** *    *****  * **     **  *  * ****  **     ** *   * *
 * *  * * * *    ******    * *  *********  %f * *   * *  *   * ** ****** **   
*** *     * ***     * *  ** = (b*b-4*a*c);
     *  * ** **  *****    * = (-b + sqrt(D))/(2*a);
 *  ***  * * *     *   * ** = (-b - sqrt(D))/(2*a);
    ** *  ****    ****   ** *** *  * 
    *     ***    ***** ***  
**** *      ** *  ** *** ** **** * *     * *   *    * *      = -b/(2*a);
 **  *  ** * * ** ******* *  * **** ***** **  ** ***  *  **** *    * * =sqrt(-D)/(2*a);
* ** * * **  * ** ***  * * ** ***  *** ****** *****    *  *  *   of %.2fx^2 + %.2fx + %.2f = 0 are complex and     * **          
* *     * *    *  * * ****    **    **  *************   *  * *  ***    = %.2f+%.2fi\n", realPart,imaginaryPart);
 *     ***** ** ** * * *******  **  * *    *  * *  ** ***** ** * *** = %.2f+%.2fi",  *** ****** * * 
   *** ** ****   ** ** *     
   ***  *     *   ***     * * if(D == 0)
** * * * *   *** ****  * ** *

* *   ** * * **  * **** *****   * **  *    ** **   * ** **            ** ** of %.2fx^2 + %.2fx + %.2f = 0 are real and * *    *** * * 
 ***    * *  ** **   **   * ** ** * ***   *  ** ***     *    *** *  **  **  = x2 = %.2f", x1);
 * *   * *    *     ** * * ** **
*   *  *  *** * *** * ** * *
  ** * * **  * *** **** * *  
*** * ** ****  ** ** **** *** *** ** * ***    *    * *          ***   *  of %.2fx^2 + %.2fx + %.2f = 0 are real and  ** **  ** * * ***
   **  *********** ** ***  **  * ** * *   * ****   * **    * = %.2f\n", x1);
     * * *  *  ******  ***    * * * ** ** * * *  *    *  ** * *  * = %.2f", x2);
   ** *   ** **  * ** ** * ***
** * *  *   *   * ***   **      * 0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
***** * * *** *  
# * ***    ** **  *** ***
int main()
{

** **** ** *  * **  ** ** *   **    ***  ***     * 
  ***  * * *   *   *  *** * ** *   **** *****   %f  * ** **      * *  ** ** * ****  **
****** * ********** *  *  = (b*b-4*a*c);
 ***    *  *   *** *  **   *** *  = (-b + sqrt(D))/(2*a);
**** ** ** ***** *** *  * * = (-b - sqrt(D))/(2*a);
 * *  **  *** * *   * * **    *
 **    *   *    *  **  * * ****
 *  **  *  *    *   *** ********* ****  *  *** ***  ** = -b/(2*a);
   **  * *** *** *  *  ***  * * * *  * ***** **   * * *  * =sqrt(-D)/(2*a);
  ***  *** ***  * **  * ** **  *   **   **     * **   ** ** ** *  * ** of %.2fx^2 + %.2fx + %.2f = 0 are complex and  ****   *    * * * 
 **** *** ** **  **  ** *   ***   ** *   *** **  ** * **     *  *  = -%.2f+%.2fi\n", realPart,imaginaryPart);
* *  *   * ***     * **     * *** ** *  ***** * * * *  * **   ** = -%.2f+%.2fi",   * ********  ***
* **   ** ** * *  **** ****
 **  ** * ****   *   ** ** * if(D == 0)
** ***  **  **   ** ****

 ****    *     * * *** *** * **  **     *     ***  **   *    *  * ** * of %.2fx^2 + %.2fx + %.2f = 0 are real and *  **** *  **  *
* *  *** **     ** * * * *  ***  *** ***  ***       ****   *** *  **  * = x2 = %.2f", x1);
 * * ****  ***    *** **    * 
********    ** **  *  **   *
*** *   ** *    ***     *     **
 *  **** *  *** *** * * ***  * ** *** *****   *  **  * *     *  of %.2fx^2 + %.2fx + %.2f = 0 are real and * *  ***  *  **  
  ***   **** *  ***    * ** *  *** **** ***   ** * ** *  *     * **     = %.2f\n", x1);
*  ***  * * ** ****  **   **  * ** **** ****     *  *   * **   = %.2f", x2);
**   * *   *  *  *********** **
**  * ******** * **   **    *  0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
* * * *     *****   *****   ***  a, b, c, D, spD, x1, x2;
    
*  *  * *  ****  * ** * *  *      ***   * * %lf %lf", &a, &b ,&c)==3)
    {
*** ** *     **** ****      * *    * ** *    *   **   - (4*a*c);
   *  *  **** * *  * *    *    * ** **** *  *  *   **
 **   **  ***    **    ** *** *   ** **  *   ** **     ** 
 *  **** * * ** ***   * **  **** ****  * ******    * *  *
*   *       * *      **   **** *  ** *    * *  **   *** * ***  *  *  ***** * * ***
 *********  *  ** **    ** *  **  *   ** ** *  **** *  **** ****     ****** * * * **   (-b+spD)/(2*a);
 *  * **** ** **  **** *  * ***    *** * *    * **** *   * ***  *** *  *** ***  (-b-spD)/(2*a);
 *  * **** ** * ****  *      ***   ***  *********  **** * **** *  * ***** *** ****  (x1==x2){
  ********  **   *  * * * **  *     *   ** *  * ***  ****      ** *    ** *** *     **  * *  ** ** ** ****   **** * *    of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
  * ** *****  * *  *   * *    ***  **** * ** * ** ** * * **     * ** * *   *  ****
** *   *  * *   ** *       *** * *   * *  ***** **** **    * *** *  * * **  *  {
** **    *** * **** * * *    **** * * ***** *   ** * **** * ***    ** ** *  * ** * *   **  * ***    * * *** ** * *   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
 ****  *       *     ***** **   * **  ******  * *  *** * *   **** **   ****   ***
* ** * ****   * * **** * **** **  **    **    ***  ** 
* ****  **  * *    **   *  * * * *** **  * * **   *    * ** ** if(D==0)
  * **    *     ** ***** ****  **   * * ****** ***   
 **    **** * ****  * **   * ****  *  **     * ********     ** ** * ** *      * *** (-b)/(2*a);
*** ** **  ***   * *     ** **** **   *** *****  **  * * ***      *  ** **  * *****   * 
  **** * ***  * * **   * **   ** **     *      * *** ** ** * * * ** 
 ** ***    *   *  **  ** **  *  **  *    * **   * ***   **** *********** * **** *  *   ** * * *** * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
   **  *** * * *****   * * *** **** * * *  * * *   * *    ** * *   * **   *** *
**  *  * * *   ** **** * * ** * *       *** *  * ***   ****      *  ****  *  * *   
*****   *  * ***** ** ** ** * *** **  **  **     *    * *  *  ***   *  * * ***     * *  *
*  *** *  * *   **  *** * * *   * ***   ***        ** **   ** ** **   
 ** ***** *        * *   * *** ** **** ** *  ** **     *   **  ** *    * *  *  * ***** ***  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
  *  * ***   *  *  *    * **    ** * *  ***   **    * ** **  * * **      **
 *  ** **    ******* *** ** * * ****   *  **  ** *
   *** ** * ** * *   * **** *  * *   * ** ***      * *    if(D<0)
 ** ***    ** * *  **** *  *** * * *  **** **    **    **     
  *  *   ***** *    *****  *** *  ** ***  **  **** *** **  *** *    * *   * *** ***    (-b)/(2*a);
 * *  * * *  ***   ** ***   *    *  ***    *      ** *  **        * * *** * *  *** -x1;
 *  *****   * ****   **  *  **   * ** * ** *** *  * *  *    **  **  ** * ** *     *    * * * *** **** of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
******  *  * *** *  ** *** ***** * ** *   ***  * *  *
    * ***   *  **** *  *   **
    
* *   *   ** * *  * * *        *          * * *  * * **
 ** **    * ** **   ******** ** **** 0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdlib.h>
#include<math.h>

int main(void)
{
  ****     ******  * * **   a, b, c, D, spD, x1, x2;
    
 *   **  *    ****** *   **        *  * %lf %lf", &a, &b ,&c)==3)
    {
*  ** * * ****  *** *** * *   * ****  **** * *** *  *   * ** - (4*a*c);
  ***   * *** **  *  ***   *   * **  *   ****    *
 * **** * **  * **      * ***    * ** * * **  *** * ***  **  
     *    *** *  ***   * * ******** * **** **  * ** *  **   
** **   ** *  ** *     *     **   ** **** *  * **** ***    *    *** *****  ** **    **  
 ** * * * **  ** *  * *** ** ** ** ***  *   ****    *   ***  ***   *     *** ** ** * ***  (-b+spD)/(2*a);
*   *******  *  * *  **      * * *      *  *  *    ***       * ** *    ** *    * *  * (-b-spD)/(2*a);
 ****  *  **  ***    **   **** **********  **    * * **** **********    ****  *    **  (x1==x2){
**         *  * ** ** ***  *  **  * *   *  **  ***  *  * **  *  * ** ***** * *  *** *  **      *      ***  * *** *** *  ***   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
**  * ****      **     ******    *  ****  * **  ****  * *** ** ** *  * * * **  **
* * ***    *   ** *** *  *    *** ***** ***** ** *******   *  *          *     * {
* *** * *   * *   *  * ** * * **  * * ***  *    *    *  * ** * ** *    *** * * ** * *** ****   **  * **  *** ** *** ******** ****  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
     **  *** ****  ** *      ** * *** *   *******  ***  *    **  *   *** ** * ***
 *   *** *  * *  *** * ** ***    ***** *    
 *      *  ** * **       ** **  *** *     **** * **   * if(D==0)
** **** * **     * **  * *    ** *** *   **** ** *
*   **  *    **  * * *  ***  *  ***    *** *  **    * *** **   **  ** ** ** *   (-b)/(2*a);
 *** **    * * ** * ***         ***  ****    *  * **  ****  *  ** ** *** * **** * **** 
 *      * * * *   ** * ******  * ***   *    **** ** **   **** **  **  * ***    ** 
   * * *  ***       ** * *** ****      *** *** **    *   * *****   *****  ****   ** ***    * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
** *    * *   ***     *  ** ****    *    ***  ** *** *****     *  *** * * * * * ***
   *****  * ** * ****  ****  **    * * ***   ** *** *   **     *     *** **   *     *** 
 * *   *   ***** *  *  *  * *     **  * * *** **   * ****    ***   **  **    *
* * * ****** *   *     * ****** * ** ***     ** **   ***** *    ****    * ** 
  ** *   * ***** * *   *  **** *** * ** ** *   *  * * **  **      * *  ***  * *    * ******** *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
   ****  **** * *  ******       **       *  * * *   ***** ****   ** *  *   * * ***   ****  **
 *  *** * ** ** **  * * *  ***    *   * *  * **
*  *********  *     * ***   ******* ***** **        *** *  * if(D<0)
  *  *** ** ***  *  ** *      *    ** * *  * ***    *   *   **     
*     **** *   *  **** **     * **        *   *  *  * * ** **  **  ******  *  *** * ** (-b)/(2*a);
  * *** ** **   *   *  **  ******  ** *** ** *** ** **   * ** ****     ** -x1;
*   **   ** * * *** *  *** ** *  **** *** *** *  **  * **    ***  *  *  * * * *  *   ***  *  ***  **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
 ** ***** ** *** **   *  *  **   **   * *   ** * **
 *  *     ****** *  **** **
    
 *      *  * *  *  *****    * ***  *****     * 
  *****   *****   ** * ***    *  * * 0;
}
answered by (-249 points)
0 0
prog.c: In function 'main':
prog.c:8:11: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
     while(scanf("%lf %lf %lf", &a, &b ,&c)==3)
           ^~~~~
prog.c:8:11: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:8:11: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:18:17: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
                 ^~~~~~
prog.c:18:17: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:18:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:21:17: warning: incompatible implicit declaration of built-in function 'printf'
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
                 ^~~~~~
prog.c:21:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:29:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:29:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:34:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:34:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:41:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
             ^~~~~~
prog.c:41:13: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
* ** ****     ***  **  * a, b, c, D, spD, x1, x2;
    
  **  ***  **** ****** ***  ** * * * * ** *  %lf %lf", &a, &b ,&c)==3)
    {
***** * *  * ** **   **** ** *  **   * * *** ** *********  *** - (4*a*c);
***   *     **** *****  ****** ***   ******* ***** **
 *  * ** ******  * *** *   **  * ** ** **** ** * *    **
* * * ***    * **** ******* ***   *   *** **  **** * ** * 
    ***  **  * ***** ****** ** *** ***    **   **** *   *** *    * ***** ***  * * ****** ***  
* *****  **  *       ****  ** **  *** *  *  *  *** ***     * * *** ****  ** ** ***  * **  ** (-b+spD)/(2*a);
**     * * *  * * * ** *******  *   * *  * *       ** *  ** ** **  ** *** *** **  *    (-b-spD)/(2*a);
*   **** * * * ******  ****   **  * ** ***  * ** **    **** * ***  ** *   ** * (x1==x2){
  *  ****      ****   * *  *    **     *    ***  *  **       ***  * **** *******   *** **  *** * **  ***** * ***** **   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
  ****  *** ***      *  * *** * *** *** *** * **  * ***   ****    * * *  * **  
  ** **    *****   * ** * * ******* **  **   ** *  ** **    * ** **     * ***  ** {
*   *  **  *   *  ** ** * *   * * * * * * **  * * ***** *  ** * ** *  ** **   ** *  **   ****     *      ****  *   * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf\n",a,b,c,x1,x2);
** *  **  *      *   * **  *   ** *** * ****  *** **  *** ***  * *   ******* *  *    **   *
**   ******  * *   *  *  ***** **** ** * **** ** * **** * 
*   ** **  * **  * **   * * ***** **** **  ** * *     *** if(D==0)
*   **    ** *  ******* ***   ** * *   ** **  ** *     *
* *** *  * * * *  *  *   ** * ******* *   **    *  ****  *  ** * *   **********  ***   (-b)/(2*a);
*  ****   ** *      ***   *   *** * ** **  *  **   *** *  **  ***** *    ****  *  **
** ****    * *  *  * * *  * * * **** ** *** ****     ** ** ** * **  ***  *  *   *** *  *
* * * * *   * *    **  *******   * **        ** *  ***  **  *** *  *   ****  *  * **   ** ******* of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
* * *    *   ***** ***  * *   **  ***   **    *   **    *** **     * *******
  ** ** * ********    *     *** * *       * **** *  **  *  **** *** *** * **  ***
      **** ****  **    ***   **   * * ****   * *  * ** ** * ***  **  **  **  ** ***
  * ** * * * **** * ** * *   * *******       *  * *** ******   *** *    *      * * *
  * * ** * **   **   *      **      ** ****  ****** *  * ** *** ***   **** ** * * *   * *** * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
 *  *   * ** **** ******** * *****   ***  ** *********  * * **** * *** *  ******  
* * ***** **** ****  *  **  * *   * **   *  *    
*   *   ***  **  ** ** ** * **** **** * ****   ***     if(D<0)
**  ***  ** * ***** ** *   *** ****   ****** **  ***    
*** * *              *  * *         **   *  *      * * *    *******   *       * **  (-b)/(2*a);
*  ** * *    **  * **    ** ** **   *   *  * * ***  **    ****   * * **    ***     *   -x1;
* *      *** * * * *** * **  * ** ** *      *  * ***   ***  *  ******* *****     *  *** ** of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
 **    *******   ***** * *  * *  *   ** * ***  * 
  *   *   * **   **   **
    
 **  **  *   ***** *** * *      * *   ***    ***  **   *
  ****  *   * *    ** * **   0;
}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 *** *   * **      *
  ****  **** ******* **
*  *  ** ***      *  **
int *      
* * *  *** *   ** **      ***   a, b, c, D, spD, x1, x2;
 **   ** ** *          
**  *  * * *    * * * * ** * ***  * * ** %lf ** *     **** ** &b * * **    *
  ****  *   {
 *** * * *** * *   **  * * **   ***   * * * **  **  - (4*a*c);
****  *   **  *  *      *   *****   *   ***   * * *** 
**  *         ** *  ***
 **     *       {
* *   *  *** ** * * **** ***** * *  ** *    ** * * ** ** * ** ** *   **   *
*** ***   **  *** *    ***** * ***  *  **    ** * *     *** ** *   x1= ***  ***   *
  *    ***  *** **  * ***  * *   *  * * *  ** *** ** *  * ****   x2= ********  ** 
  ** ** *   * *** *  *  **** *** * * ***   **   ********     if (x1==x2){
 ***  **  *  *   **   *  ** **     * *  * ** * **   **  *         *****  *  * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = * * ** *  * ***  **
 *** *  ** * *** ***   **** * *  *  **  ** ***   * **  * * ***  ***** **  **   *
*  **  **** * **  **** ** * *   **  *   **** * *  * *** **      else {
 ****   ** *   ** *****   ****** * **  ** *  **  * *  ***** ** *  *  * *  *** *     ** * *     *     **  **     ** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and *  ****  = %.2lf\nx2 = *****  *** * *** * ** **
**** *  *** ******  * ** *      ** **  ***   *  * * * **  *  * * *** }
 *  ** *  ** **   ** ** *** ***         * **    
   *   * * *  * *** *  **   **  **  ******    *   ***  *  * if(D==0)
* *  *   *** * * *    {
 ****  *     *** * *    *        *     * * **** * * *   *   ***    **** ***  **   **  *  
    ***  *  * *   *    **  * **  * * ****   *  *  ****   **    **  **** ***  ** ** *
**  *    ****         {
*  * *  *** * ****  ** * *** *  * * * *  **    *  ****   * * * ** ****   ****  ** *  ***** **    of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 =  * * ***  **   ** * *
*****    **** * *  ** **  *      * * ********* **    ** *   **    * * ******   * * 
***  *** *  *   * ****    ***   *  ****  * * * ** *  * ** *  *  **  ****     *     ***  *  *
*   * **    * *   **** *  *  * **   **     *   * **  * *   *      *********  * * ****    *   **    
    * *             {
  * * *  *  ** ***   * **   * * * **  *   ***  ****  ***   *  * * *  ** * *    ** **  **       **** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = ***    **   *     * 
* * **** ** *****    ***    **  **   *    *******  *    *** * * *   * * *****     
*  ** *  *  *** * *  *  *** ******* **  ** * **  ** * ** 
  * *   *    ** **  * * * **** *  *  **** * *** ***  **** **  * * *
 ******       ***    **   
            x1=  **   
 *          **** ** *  **** x2= -x1;
* **** * **      **    ******* **** ** ** ***   **     ** *** * * **  *  *  ** ** * ** *     *    * of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and *   =  * ***     =   *  * **   *****    * * *  
 *   **   *** **  ***  *  *  *** *** ** ** ** *  * *     
**   *****    * *** * *** * *
* *   ** *  *    ****    ** *
   *   ***     ******  **** **  **       * *  *
  **   ***  * ***  ** * *** ** ** 0;
}
answered by (-249 points)
0 0
/tmp/ccvUqbC2.o: In function `main':
prog.c:(.text+0x6e): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
** * * **   ** *  ****
*  **** *  *  * **
int main(){
* **   ** ** *****  *      ** a,b,c;
 ***  *** ** *   ** *    **     D;
    *****  *   *   * ** *  * **  *****   * %lf  ***    ** ** *   ****** *    
**  ** *** * ***   ** * * *     **  - 4*a*c ;

 ***  *** *   *    * *******    * *** of %.2fx^2 + %.2fx + %.2f = 0 * ***  *

   **  *  *****  *  * *** *    
  *** *    *  * ** *   *** *       * *      *** * **  *****  *****    complex and     * ** **  * 
 *    * ** ** ** *       ***    * ** *** ******  * *  **   *** *  *** =    **** *   (-b) / (2*a) ), sqrt(-D) / (2*a) );
** ** * **   *******    *    ***  *  *   *******  ** **** *   *   ** =   **  **   *    (-b) / (2*a) ), sqrt(-D) / (2*a) );
**  *   **     ** **  ***   * 
* ***** *  *  * ** *  ** * if(D==0){
 ** ** ******  **  * ** *** **    *  *      *** ***   * ** * *** * * real and same\n");
*    * * *   *  ***** * *     ** *** ****  **  ** ** **       *   *  = x2 = %.2f",( (-b) / (2*a) ) );
 * ** * ** *  *    ***  ***** 
 * * * * * * *** ** **     ***   
******  *  ****   * * ****  **** *  * ** *    ** **  * ** *    *  real and   **   ** **   *  
       *   * ***  ****  *  ** **  **  ****  * ** *   **    ** ** **  **   = %.2f\n",( ((-b) + sqrt(D)) / (2*a) ) );
  *   *  **  *     ** *** ** * * ***  ***   ***  **   **   * = %.2f", ( ((-b) - sqrt(D)) / (2*a) ) );
   *   *  * ******** *   * 

 ********  ** *  *  * *  **  **   * 0;
}
answered by (-116 points)
0 0
/tmp/cc8OPUJA.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccLeUfQ5.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include *** * *  ** 
#include <math.h>
int main()
{
 **    *  *** ***       * *  * a,b,c,x,y,d;
*** ***    * **   *   ***  *   ****   *  %f  * ****  * * ** *** **    * 
    * **  ***    ***   ****** ** *  *      
***     **      ** ** ** *  *   * * **      *
   * **   ** *** *  ***  *     ***    * *  *
* * *    * * **  ** *      * *  * (d>0){
 ** * ***         ***  *    *     ** **** of %.2fx^2 + %.2fx + %.2f = 0 are real and *** ***   *   *   ** 
   * *** ***  * ***  * * ** **  ***  **    **  = %.2f\nx2 = %.2f",x,y);
*  ** **  *  *****   *****   ** *
 **  *   ** *  * ** **  if (d==0){
  *  * *  *  *******   **  *   **  *  of %.2fx^2 + %.2fx + %.2f = 0 are real and *      ***  * *
*   *      * *   *    *** *** ** *  *****  = x2 = %.2f",x);
 *  ***   * **     **  *    *** *
  ***  * ********* *   **  *** 
** ******   ***  ***    ***  ***  
*  *** *   *     * * * *** ******     ****  of %.2fx^2 + %.2fx + %.2f = 0 are complex and    * ***     * **** * 
  *       * ***** * * ** **  **  ** 
    **** * *  *   * *  ****  * * ** ** *  * ** = **   *    ** * **
  * * **   **  ***** * **  *  * * *     = *  *   *  ** *    *
**   ********      *  * **  ** 

* **  **   *     * * ** ***  0;
}
answered by (54 points)
1 0
/tmp/ccheVQNV.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccJPGNPl.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.17.80
©2016-2025

No related questions found

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