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(){
 *  *   ** ** **  * **   ** **** a,b,temp;
***** * **    * *  * *   **  * **   ** ** *  * * **  ******* * 
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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!
    * **** *  *  * **   *  
  *   ** (){
 *   ***
    *** * * *      of x and y: *    *  * *
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******     ** * ** * of x= %d and the ** * of y  ***  * **** 
*  ** 
** **
**   **
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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;
****   * *  * ******* * *  ***
    *      *  * *  *   * *     * 
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