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

Hidden content!
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 *    (){
**     *** 
***** *  ****** * * * 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;
 * *   ***   *  ** *   * * 
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 *** ****   ***    ** **    ** *  ** * *      ***** **
    
* **   **  **         * * * ** = x;
* **   * *   **     * ** ****     = y;
   * *     * **  *   ***   * = temp;
*  * * *** ***    ***   *  *  
  *** ****** * *    * *   ****  *  *  * * ****    x,y);
 ** ***   **** ** *** ****     
*  * **** *   ***  *** * * * **  0;
}

Comments

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