Example: Convert Binary to Decimal in C using Function

C
C++
C#
Java
Python
PHP

// Convert Binary to Decimal in C using Function
#include <stdio.h>
#include <math.h>

int convert(long long x);

// It's the driver function
int main() {
    long long x;

    printf("-----Enter a binary number to convert-----\n");
    scanf("%lld", &x);

    printf("\nThe Binary: %lld => Decimal: %d\n", x, convert(x));
    return 0;
}

// This function will convert number binary to decimal
int convert(long long x) {
    int dec = 0, i = 0, rem;

    while (x != 0) {
        rem = x % 10;
        x /= 10;
        dec += rem * pow(2, i);
        ++i;
    }
    return dec;
}