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;
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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;

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

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

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

Comments

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