98. Convert String to Integer

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

int custom_atoi(const char *str) {
    // Your logic here
    int num =0 ;
    int i = 0 ;
    int sign =1;
     // Handle negative number

    if (str[i] == '-') {

        sign = -1;

        i++;

    }
    if (str[i] == '+') {

        sign = 1;

        i++;

    }

    while (str[i]!='\0')
    {
        if (str[i] >= '0' && str[i] <= '9') {

            num = num * 10 + (str[i] - '0');

        }else {
            return num *sign;
        }
        i++;

        
    }
    return num *sign;
}

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;
}