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