Convert a String to Float

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

float custom_atof(const char *str) {
    // Your logic here
    int number=0;
    int div = 0;
    int sign = 1;
    bool div_flag = false;
    if(*str == '-')
    {
        sign =-1;
        str++;
    }
    else if(*str == '+')
        str++;
    while(*str != '\0')
    {
        if(div_flag == true)
            div++;
        if (*str == '.')
            div_flag = true;
        else
            number = number*10 + (*str - '0');
        str++;
    }
    float f = sign * (number/(pow(10,div)));
    return f;
}

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;
}