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

Comments

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