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