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(){
***  * ** **    ****** ** a,b,temp;
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 ***  * ** ****  **    * **   * * *  *   
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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: * * **   * 
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* *   *  * *  * **   * **  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