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