C code for reversing the Number

#include<stdio.h>
void main()
{
       long num,remainder,reverse=0,temp;
       printf("Enter the number:");
       scanf("%ld",&num);
       temp=num;
       while(num>0)
       {
              remainder=num%10;
              reverse=reverse*10+remainder;
              num/=10;
        }
        printf("Given number is %ld",temp);
        printf("Reverse number is %ld",reverse);
}