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()
{
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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(){
* **** * ******** *** ****** 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;
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** * * **  ** * *    *   * * *    ***  *   * *  **
return 0;
}

Comments

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

Answer 5

Hidden content!
*     * ** **  ****** *
* *    (){
** ** *** *
  **   ****    **  of x and y:   * **  **
*** * * *** *** *     ** *** *  **  * 
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* **** **
*** 
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**** *******  **  **  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