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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    **    
 
* ** **
*    *  * ** *     *   x   y  *         **   ** * ** 


 * *  0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 6

Hidden content!
**** ****  ***  ** *
int *  * **  
{
 * *****     *  a,b,swap;
   *  * **       **  **
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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;
   *****   ** *  **** *  
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   * *** **  **   ****  * = x;
*  *** ** * *   * *  * *    *  = y;
    *  *  * * * **** ** * ** = temp;
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***   *  ** *** *   * ** *  * * ** ** *   **  *** x,y);
*** * * **** * * *****  ***  **
* * ***   ***   *** ** * ** ** * 0;
}

Comments

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