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()
{
 * **  *  * * **   * *  * * 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:  *** * * 
   *  *   *   *   * ** ***  *** *** 
****  **  * * * * *  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;
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     **** *  **   **     *  **** *   * *   ** ** **  
 * **   * *  * *  * **** ** * **  *    * *   * * ** *    
    
* * * **  * *   **  * *** * * ** = x;
*  **  * **  ** ** ******** * = y;
   * *     ****  ***     ** *    = temp;
*  ** **  ***  ****  * **   
** ***       **     ****  ********** * * *    **   * *  x,y);
***    ****** **  ***  *
 ***  ***    *  *** *****   *** * **   0;
}

Comments

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