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