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

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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