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