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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     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(){
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* * **  *    *  ***** *  *  ***  * x,y,temp;
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*   *  ** **   **  ** *  * * ***** *  *** * ***  
    
 * * ***  *  ** *     *    = x;
 *     ** ** *  **** *  * **** = y;
*** * * ********     ****   = temp;
****  *   *** *  ******** 
    ***** * *  ** *   * ** *   * *  * **    x,y);
 ** *   ** **   *   * *     
 *         *  ***** ** *   * ****** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output