/*
 * C Program to Convert Octal to Decimal
 */
#include <stdio.h>
#include <math.h>

int main()
{
    long int octal, decimal = 0;
    int i = 0;
    printf("Enter any octal number: ");
    scanf("%ld", &octal);
    while (octal != 0)
        {
            decimal =  decimal +(octal % 10)* pow(8, i++);
            octal = octal / 10;
        }
    printf("Equivalent decimal value: %ld",decimal);
    return 0;
}