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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*  *  **     *** ***  * *    *  ***   * ** **       *  **
**** **  **** **    **  *   ****   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!
* *      **  * *  **  *
  *   (){
 * ***** * * *
 * ****  * *   **** ***  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