118. Convert Binary String to Integer Without strtol function or Libraries

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

uint16_t binary_to_uint(const char *str) {
    // Your logic here
    int i = 0;
    uint16_t ans = 0;
    while (str[i] != '\0') {
        uint8_t bit = (str[i] == '1')? 1 : 0;
        ans = bit | (ans << 1);
        i++;
    }
    return ans;
}

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

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