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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}

Comments

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

Answer 2

Hidden content!
#include <stdio.h>
int main()
{
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  * ** * **** ***  *** *** 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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    **  *  * 
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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;

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

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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;
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*      *  *      ********  * = temp;
*     *  ****   *  ****
 ***   ***** * * * ** *** * * *  ** *** *     x,y);
*** ********* * *** ***  
  **    *      *   *  *** * *  0;
}

Comments

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