98. Convert String to Integer

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

int custom_atoi(const char *str) {
    bool pos = true;
    int i = 0;
    int num =0;
    
    while (str[i]!='0'){
        char c = str[i];
        if (c == '-' ){
            pos = false;
        } else if ( '0'<= c && c <= '9'){
            num = num* 10 + str[i] - '0';
        } else if (c == '+') {
        } else {
            break;
        }
        i++;
    }
    return pos? num : -1*num;
}

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++;
    }

    printf("%d", custom_atoi(str));
    return 0;
}