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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}

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

Comments

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