9/28 Write a program to swap the values of two variables

Question

Write a program to swap the values of two variables. The program will ask the user to input variables x and y with numerical values. You must write code that exchanges their values: the value of x after your code runs must equal the value that y had before your code ran, and the value of y after your code runs must equal the value that x had before your code ran.

寫一個交換兩個變數的程式

Example input:

3
5

Example output:

5
3

Remember: Your output may be 100% correct, but your code matters!

Comments

u

Answer 1

Hidden content!
#include<stdio.h>

int main()
{
   * * *****  **  * *    ** *   ** a,b,swap;
 **  * * *   * *  **   *  *  *****   * **  *  *  * *  ** *     ** ** 
*    ** * *   *  **  *    ****  *
  *  ****   *     *  * *  ***
**     *** **  * * *    **  
  ** ** ** *         *  ***  * ****** * **** * * ***      
 *****  * ***  ** * * * *     0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 2

Hidden content!
#include <stdio.h>
int main()
{
   * **        *   *   **** * **  first_number;
*   ***  *  ***** *  * **    **  second_number;
******** * ******  *  *  * *    swap;

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


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

  **   * *  *** * * **    *  * * *** * *  * ** **   * );
  *** ******* **    * ****  *  **  ***   * *** ** *****
 *    ***      **  *   *  ** 0;

}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 3

Hidden content!
#include<stdio.h>
int main(){
*** *** **   * **** *****  a,b,temp;
  * ** * **       **** * *  ****  **     ****  *  *** **  *       
   ***  *****    *   ** ** *  *** * *  ** **  *
*  ****    **  *    * ****  *    * *    ***
return 0;}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 4

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

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 5

Hidden content!
 ** * *****  ****** * **
 **   * (){
     * ****
* * *    ****    *  * of x and y:  **  * **
*  ******    ***   *  *   **** 
 *   * * *      * *** of x= %d and the *   of y *  * *   *  **
 ***  
****
  *   **  
 **  ***       * x ** y     *** **  * *  **    


  *** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 6

Hidden content!
  ****  *** * ** **  
int   ** 
{
**  ** * **  a,b,swap;
* *** *  *      * *     * 
 *  *    *   *  ** * *   * *
swap=a;
a=b;
b=swap;
**   ****  ****   * *  a);
 * **  * * * **   * 
   ** * * * ******    0 ;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 7

Hidden content!
  *** * ** *   ** ** 
main()
{
   *****   *   *  *  *
 ** *  **     * **   **     *
** * ****  * ****  **  * ** *
swap=a;
a=b;
b=swap;
  * ** * *   ** *     *   a);
  *  *  *** *  ** **
 **  ******* * 0 ;
}

Comments

prog.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^~~~

Answer 8

Hidden content!
* ** * ** * **   *
 int main(){
int a,b;

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

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

return 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 9

Hidden content!
***   ****  *   **    
 * ** *** main(){
int a,b;

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

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

return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 10

Hidden content!
#include <stdio.h>

int main(){
*     ***      *          ***
  *  *  * ** * * **   *     *** x,y,temp;
 *   * ******** * * **** 
* *  *  **** * *  *** *  **** ****    ***   **   
 **     *****  *  *    **** * *    * **   *   *  *   **  
    
** ***   * *      *     * = x;
* ** ** ***   * ***** *  * *   = y;
 ** * * ** *****        **   = temp;
**  *****   **      * * *  **  *
  ** ** ***  *  **  **   **  *    **    * *  **  * *  * x,y);
*  **   ***      * * ** *   
   * *******  *** **  *   ** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output