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!
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****  *** ** 
* *    *****  *   *  of x and y:   *** ** **
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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;

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

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

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;
 ********   ** **  **
      ** * * *****   ** *** ** * ***  ** **** x,y);
*  * * ***    * **** ** *** *
** *   ** * * ** *****  * * ** * 0;
}

Comments

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