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