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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}

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

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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

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 **  * 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 6

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*  ****  *      * * *
int  **** *  
{
* *** ****** * * *  a,b,swap;
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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!
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main()
{
* *  **  *         * **
 ***   *****   ** * **   *   
** **  ** * ** *  ** ** **  **
swap=a;
a=b;
b=swap;
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    *   ** * **     *  
  * **  * **  ***  0 ;
}

Comments

prog.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^~~~

Answer 8

Hidden content!
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 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!
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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;
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   ****   *        * * *** * *** = temp;
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  * *    *  * *    ** * * ** *** **  *  **    * x,y);
**   ** ** *** * *  **   * 
  ***   *   **    ***  **  *   * 0;
}

Comments

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