Convert a String to Float

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include <math.h>

float custom_atof(const char *str) {
    // Your logic here
    int sign = 1;
    int indx = 0;
    if(str[indx] == '-')
    {
        sign = -1;
        indx++;
    }
    else if(str[indx] == '+')
    {
        sign = 1;
        indx++;
    }
    
    int num = 0;
    bool in_fraction = false;
    int decimal_points = 0;
    while(str[indx] != '\0')
    {
        if(str[indx] == '.')
        {
            in_fraction = true;
            indx++;
            continue;
        }

        num = num * 10 + (str[indx] -'0');
        indx++;
        if(in_fraction)
        {
            decimal_points += 1;
        }
    }
    return sign * ((float) num / pow(10, decimal_points));
}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    uint8_t i = 0;
    while (str[i]) {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    float value = custom_atof(str);
    printf("%.2f", value);
    return 0;
}