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

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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(){
   * **   * * *   ***  a,b,temp;
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** *   **    *   *   **   *  *****  ** ***  *  
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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:  ** **   ** 
 **** ** ****** * *** ***     * *  * * * **
* *******  * **  *  of x= %d and the  ** of y   **   ** **** 
     ** 
*  
*  * *  *
   *** ** ** *  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;
 ****    *     ** * *  
**   *  *   * ***  * * **  *    * *     **   *** *  *
* **  * *  *   * ** **   **         *  *     
    
**** **  * ** * *  *  * ** * = x;
*****  ** * ***   *  *  *** = y;
 **  **  **  ** *    *  ** = temp;
  ** ***     *    * ** *  **
 ** *   ***   *** ***  *  *  *    *   *** *  ***  x,y);
** **   *** **  *  *  *   
  *   * *** *  **** *  ** ** **   0;
}

Comments

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