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

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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