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

Comments

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