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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**  **  *****   * * ****    ****** 
  * * ** *  *     **      ***** * 
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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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* ***    *  *** * * * ** **    *   * *** *
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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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*      ** * *** ** **  *** **  *
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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: * ** **   
* ** **   *  *   * * * * * ** *** ******
* ****  **** **  of x= %d and the   * of y  ****        * ** 
*     
**  *
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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;
***     *  *** *** * * *   
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*** * **   * ********  * *   *  **** *  * * * *** *   ** ****
    
***     ***  ** **    *** *  ** = x;
 *    * * * * **  *** *** *  *  = y;
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  **  *     *  * *   **  ** 
   *      * ** **   *** ** ***       ** *    **** x,y);
   *  **** ** * **  *** **
  ***  **  ***** * ***  *      0;
}

Comments

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