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

0 like 1 dislike
11.6k 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 | 11.6k 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:104.23.248.69
©2016-2025

No related questions found

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