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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*  **      **** *     ** ***** 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;

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

Comments

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