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