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()
{
 ** *  ****  * **   *** ***** a,b,swap;
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** * * *    *** *  ** 
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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(){
*    *    * **        * ***** a,b,temp;
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 *  *    *** ** * ********  ** * **   * * *  *
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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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****   
 ** *    *  *    * 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;
***   ** *  **** *  * * **
  *   **** *    * * ****  *  **      **  ****   ** *
 *   *   ****  **        *  *  * *  **  ********* 
    
***** *** **  ***  *   ** ** ** ** = x;
** ** *     **  *  ** ******  = y;
** *   * *** * **   * ****   * = temp;
******   *   * *** **   ****
 ** ****  *     * * ** *  **   *    * ** ** *** ***   x,y);
*** **     **  ** *****
  ***   *    **   **    *  ** * 0;
}

Comments

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