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