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

0 like 1 dislike
9.5k 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 | 9.5k 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:172.69.59.176
©2016-2025

No related questions found

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