Convert Binary String to Integer Without strtol function or Libraries

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

uint16_t binary_to_uint(const char *str) {
    // Your logic here
    uint16_t result=0;
    for(int i=0;str[i]!='\0';i++)
    {
        result<<=1;
        if(str[i]=='1')
        {
            result|=1;
        }
       
    }
    return result;
}

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

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