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

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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