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;
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**   *   **  * **  ** 
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**   * *   **    **** * *      **    *   *     
*    * *  *  *    ** * *      * 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;

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

}

Comments

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

Answer 3

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

Comments

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

Answer 5

Hidden content!
 ***   *  ** *** ***  
   ** (){
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*** * 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