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()
{
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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!
* **     **  *  * * ***** *
 **  *** (){
**   ** * *  
*  *  *    ** ***  * 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!
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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;

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return 0;
}

Comments

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

Answer 9

Hidden content!
   *** * *  **     *   
*  ***** *   main(){
int a,b;

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     * * **   ****** **  * * * **  ** *   * *   **  * *

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