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

Comments

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