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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* ** **    *** *  *** ***  **      * ***   ****
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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* **   *    * ***   of x= %d and the * * of 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