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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      * ** *   *       * *  ***    *

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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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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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* 
* *  ** 
**  *** *   * 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