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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}

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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  *  * (){
**     *  
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* *     **
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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;
 *    ***  ***      *    *  ** 
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  ***  ***  **** ****** *  *   ********  ***    ***
    
 ** **  *  ** * *****    * ** = x;
* ***    ***  *** ** **** * *** = y;
 *   *** ** * * * *** **   *  **** = temp;
    ** *  **     *    
 ***** *   ** *       **  * ** * * * *  ** *   * x,y);
*   ***    * ** *  ********
* ****  ** * * **  **       * 0;
}

Comments

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