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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}

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

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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;

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

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

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