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;
******   *   * **  ****   * ** * **    ** **    *****  ***  *
 *** *   *** *  **  *    ** ***   **** *  ***
  ***  * *   **  *   *** *** **   *  * ** * * **
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