Convert Binary String to Integer Without strtol function or Libraries

Code

#include <stdio.h>
#include <stdint.h>

uint16_t binary_to_uint(const char *str) {
    // Your logic here
    uint16_t result = 0;

    char * digit = (char *)str;

    while(*digit != '\0'){
        result = result << 1;
        result = result | (*digit == '1');
        digit++;
    }

    return result;
}

int main() {
    char bin[20];
    scanf("%s", bin);

    printf("%u", binary_to_uint(bin));
    return 0;
}

Solving Approach