Reversed Sum - c

The number N is passed as input. The program must print the difference between the number N and its reverse R.

Input Format:

The first line denotes the value of N.

Output Format:

The first line contains the value of N-R

Boundary conditions:10<=n<=999999

Example Input/Output 2:

Input:

42

Output:

18

Explanation:The output is 42-24 = 18

Example Input/Output 2:

Input:

555

Output:

0

Explanation:The output is 555-555 = 0

Example Input/Output 3:

Input:

125

Output:

-396

Explanation: The output is 125-521 = -396

Coding:

#include <stdio.h>

int main()

{

int n,m,r=0;

scanf("%d",&n);

 m = n;

 while(m)

 {

    r = r*10+m%10;

    m = m/10;

 }

printf("%d",n-r);

}

}