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

u

Answer 1

Hidden content!
#include<stdio.h>

int main()
{
**     *  *      ***** *****  ** a,b,swap;
**  **  ** * ******** **   *** *****    * ** ***   *   * ** 
** * ** ** *  ** * * **  *** ***   
*  ********* * *** ** ** ***
*** * **** ****     *** ****
**   ****  *** * * * *    ***  *  * ** * *  **** ** ***  *
  **  ** *** *****  * * ** ***** 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;

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


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

 *** * * ***  ** * *    * *   **  **  * ** ***** *** * ** *  );
 ** *** *****   * ** *****  * * ** **** *     *  **** * ***
** * **** * *****    * **** * *  0;

}

Comments

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

Answer 3

Hidden content!
#include<stdio.h>
int main(){
** *  **    **    ***  ***     a,b,temp;
 ***    * * * *     *** ***** *  ***** ** **   **   *** ** **   * ** * *
 *  * *** *   *  *  ****  **   * ***   
**** **   ** *****   *    *  * *   * *  * ** ***     *
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;
*  * * *** *  *  *    *   ***** ******   ***  * * *   * ***
* * **** ****  * * ****   * * *   **   **  ***     ** **
 *  **  **** *  *   **** *****
 * ** * **  ** **** **** ***
 ***  * **  ** * **   * ** 
 **   ****  * ***  * **  *  ***** * * **  *** * ** **  
return 0;
}

Comments

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

Answer 5

Hidden content!
*        ***  * **  *
 *    * (){
*    *  **  *
**   * ******* *  ***** of x and y: * *****
**   ** **     *********      * 
*** *****  **  * * of x= %d and the       of y *   * *  *    ** **
* *  *  
 ** 
   * ** *
 * *******  *    * 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