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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** * * * * * ** **  ***  *     *  0;
}

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;
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}

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

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

Comments

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