Convert a String to Float

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

float custom_atof(const char *str) {
    // Your logic here
    int sign = 1, infraction = 0;
    float value = 0, factor = 10;
    
    if(*str == '+'){
        sign = 1;
        str++;
    }else if(*str == '-'){
        sign = -1;
        str++;
    }

    while(*str != '\0'){

        if(*str == '.'){
            infraction = 1;
            str++;
            continue;
        }

        if(*str >= '0' && *str <= '9'){
            if(!infraction){
                value = value*10 + (*str-'0');
            }else{
                value += (*str-'0')/factor;
                factor *=10;
            }
        }else
            break;
        str++;
    }


    return sign*(value);
}

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;
}