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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* *  * **      *** ***** * ***    ** * *  ***  * ***  * 
***    * *********  * ** * *  *  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

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

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

Comments

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