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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* *   *** *   ***  *  ***  * 
** ** *  * *     *  *     *** **
  ***  ****   ** *** **     *  * * * *   ** * * * *
****  * *  ***    ** *   ** 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!
* **  * ** *   *   **
 *    (){
* * ****  
* * **** *    ** *  *  of x and y:     * 
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* *** *  * ** *  * of x= %d and the   * of y          * **
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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;

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

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

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