// C program to convert binary to decimal
#include <stdio.h>

// Function to convert binary to decimal
int binaryTodecimal(int n)
{
    int num=n;
    int dec_value=0;

    //Initializing base value to 1, i.e 2^0
    int base=1;

    int temp=num;
    //Extracting the last digit of the binary number
    while(temp){
        int last_digit=temp%10;
        //Removing the last digit from the binary number
        temp=temp/10;

        //Multiplying the last digit with the base value
        //and adding it to the decimal value
        dec_value+=last_digit*base;

        //Updating the base value by multiplying it by 2
        base=base*2;
    }

    // Returning the decimal value
    return dec_value;
}

//Driver Code
int main() 
{
    int num=10101001;
    printf("%d",binaryTodecimal(num));
    return 0;
}