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
    uint16_t result = 0;

    for(int i=0;str[i]!='\0';i++){
        result<<=1;
        if(str[i]=='1'){
            result |= 1;
        }else if(str[i]!='0'){
            return 0xFFFF;
        }
    }
    return result;

}

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

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