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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*** ***  ******** *    ** 
*** *      *   *  ** *  ***  *  
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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()
{
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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!
 * *    *   **  *  **  
***   * (){
**  ****  ***
 ** ** * ***      of x and y: ** * *** *   *
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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;

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

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

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

Comments

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