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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}

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

Comments

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