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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}

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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**** * * *** *  ****   ** *   **      * * *  
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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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* *  *   * *  
 ** *   *  **      * of x and 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;

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

Comments

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