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()
{
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  * * *  *  *  *    **  * ***   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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*  *   (){
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*  **  *******  *      x  ** y  * *   *         * ** **


 *  0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 6

Hidden content!
* * *    *  *  ** *    * 
int  * ***   
{
**         *   a,b,swap;
*    ***   * *  *   *     *
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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;

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

return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 10

Hidden content!
#include <stdio.h>

int main(){
*** ***  **  ** ** ****
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***** ***  *** * ** = y;
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  *** * **   * *** * **   *   ***   ** ** *  * * * *  * x,y);
***  * * **  * ** **
**      * ****  *   * *  *   *****   0;
}

Comments

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