10-26 Exercise 1: Calculates and displays the GCD of 2 integers

Question

Write a program that asks the user to enter two integers, then calculates and displays their greatest common divisor (GCD).

寫一個輸入兩個整數 輸出它們的最大公因數程式

Hint: Use Euclidean Algorithm

使用歐幾里得演算法

Example input: 

12 28

Example output:

4

 

Answer 1

Hidden content!
#include<stdio.h>

int main(){

  *** ** * ** ****  ** *  **   a,b,i,max;

   * * ** * *  ******* **** * **       *   ** ***** ** ** **  

 ** ****  *  *  * ** ***  **** * ****** ***** ***** * *
 *** **   **  **   * *** *
   * * *  *  *  * ***     *   *  **    * ** **      * *  *  **   * *   * ****  
**** ** ** *****  **     * *  *** ** *    ***  *  **   ****     *  *** * * *  ** * *****  *  *
    }

* *   * ** ***  **   *  **  ** * ** *  **  **  *****

***   ** **   *  *   * * * *  0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 2

Hidden content!
  * *  ***     ***** *   
int    
{
int    *
***** *  *  *****  **  **** **
*   * **  *    ****  * *  *** *
 * * * (a % * * 
{
 * * 
a=b;
*
}
  ****   **  **  *  * * 
*   * 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 3

Hidden content!
# include<stdio.h>
int main(void)
{
** *    **  *****    * **  * *  a,b,c;
 *** *     **  *         ***   *  * * * *  **  *
*****  *  ** * *  * * *** ***  * ****    *       *  
** * * *  **    ** * * **    (a % b!=0)
    {
  ******** ** * *** *******   ** *   ** **** *** 
       *   **   * ** *  ***  * ******* *  * *  * *  *
 * * *  **** ****** ** **    *  **  *****  *** *** **    *** *
***    *** * *     ** ****  
   *    * * ****** *    *   **** **  *  * * * * **  **
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 4

Hidden content!
   * *  **  **  *  
int main (void)
{
int a,b,c;
****   *  **  **** **  * * * 
 **  ***    *  * ** *  *  *
while ( a % b != 0){
      *** *** **  * *    ***
  ** *   *  *  ** ***** * * * 
* *** *     **    **      *
}
 * ** *** *   **   *
  * 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 5

Hidden content!
# include<stdio.h>
int main(void)
{
* *  *      ****  **  **** *  * a,b,c;
  ** **  ** ****   ** ** * ***     *** **  * 
     * *    * **  ***   **   * **    ****  *  **
  *   ***  *  *   ** ** *   (a % b!=0)
    {
 ******  *  * * *** * **** *  *    *** * ** *  ** *       
** * *  *      **   *  * **  **    ** * * *   *** *
     ** **  *  ** **  *   * *   ****  ** *   * **  *   * 
  *   ** *  **  * *   **  
 ** **  *      *** **** ****  **   *** *    *  *      ** **
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 6

Hidden content!
  *      ** ***** * 
int main (void)
{
int a,b,c;
*** *  ***  **** * *   ** 
   **  * * *  *   *       **
while ( a % b != 0){
* *   **  * * *     * ** *  ** **
 * ** ** *  *  *  * ***  * 
**   *     **   * **  * *** * *** 
}
  *****  *** ** *   *  
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 7

Hidden content!
*** *   * *  *   *  **
int main * * 
{
int   * 
***** *   ***    *  *       **  * **  * 
 *   (a%b != 0){
*  *  ***** * * ** * * **  ***** = a%b;
 ***     *  *   *** ** * = b;
     * *   **** *** *   * * = c;
}
   *   ***** *** * ****  
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 8

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
* ** *    * ***   ***  * *   a,b,i,max;
* **** ****  * ** **  ****  **   ***   * %d",&a,&b);
* * **    ** ** ****** * **  *    ******   *   * * **** **
 *  **   *    **** * * 
*  *   **    ****  * **   ** * ** ** ****  ***   * * **   * **  *** * *** * 
* ** **     * ***  *  ******* *    *** *******
***  *** *  ** *** *****  *

***  ***      ** ** * **  *  **     ***  *  * * **** ****     *     ****  *
***  ***  *    *     * * * **   0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 9

Hidden content!
#include <stdio.h>
#include  ***** ***** ** 
int a,b;
int i;
int GCD=0;
int remainder1=0;
int main(){
 ** * ***   * *  *  * * ** * *  *** **** ***   *  *** ***   ****** 
 *   *  ** *  ***   * **   (b!=0){
*  *   **** *  **     * ** * * * *  ** **  ****   *  * 
 *** * ***** * *  **    **   ** **   *** *    *  *  ****  
**   *  **  **  ****        *    ****   ** ***     *   **  
 *** * *   ** *       *******
  *  *  **   * * * *** ***** (a==0){GCD=b;}
* **   * *  **  *    **      (b==0){GCD=a;}
* **   * **     * ** **   * **   ** ***    **
*******  ** ** ***      0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 10

Hidden content!
#include  ** **     **
int main (void)
{
** ***  * *   *      *    *   a,b,remainder;
  ***  ****    ******  * **  *    *  * * %d", &a,&b);

 ** * * ** **  ** *  **  ******  (b != 0){
   *   **  **** ***  **  *    *  ***   ****** ***  **  *    = a % b ;
** * ** * **   ******   *    **    * ** **      *   *    = b ;
*  *  *  **** * **      **** *  ** *    * * ***** *** ** = remainder ;
* ** ** *** ****   **** *

** * *** *       *   *  ***  ** **  **  *    * **

** *  * *    ** *** * ***  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output