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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}

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

Hidden content!
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**    (){
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  *  * 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!
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*   *     * 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;
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 ** **  ***  *  **** ***  *  ** **         * **  *  x,y);
   * ***** * * * ****   * **
   * *    * *  * *       *  * 0;
}

Comments

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