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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* ** ***** ** *** **    *   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(){
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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;
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** *   *      ***  *
** * **   ** *****   * 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!
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 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(){
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*****  * *    **  **  *  * * *     * x,y,temp;
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 *  *  ** **   *  **  * ** **   ** * **   *  ****** * * * *** 
    
********   *** ** *   **  * ****  = x;
   *  *   **    ***** = y;
* *   *   ** *  ***** ***  = temp;
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 **  * *  ** *   ****  ** *  ****  ******   **** x,y);
*** *  *    *** ***   *
 *** *** *   ** **   * **   *  * 0;
}

Comments

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