int bin_to_num(long unsigned int binVal);

int main(int argc, char** argv) {

    int function_decimalNumber = bin_to_num(0100010100000000);
    printf("%d\n", function_decimalNumber);

    long int binaryNumber, non_function_decimalNumber = 0, j = 1, remainder;

    printf("Enter any number any binary number: ");
    scanf("%ld", &binaryNumber);

    while (binaryNumber != 0) {
        remainder = binaryNumber % 10;
        non_function_decimalNumber = non_function_decimalNumber + remainder*j;
        j = j * 2;
        binaryNumber = binaryNumber / 10;
    }

    printf("%d\n", non_function_decimalNumber);
}

int bin_to_num(long unsigned int binVal) {

    long int binaryNumber, decimalNumber = 0, j = 1, remainder;
    while (binVal != 0) {
        remainder = binVal % 10;
        decimalNumber = decimalNumber + remainder*j;
        j = j * 2;
        binVal = binVal / 10;
    }
    return decimalNumber;
}