98. Convert String to Integer

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

int custom_atoi(const char *str) {
    // Your logic here
    int sign=1,num=0;
    uint8_t index=0;

    if(str[index]=='-')
    {
        sign = -1;
        index=1;
    }
    else if(str[index]=='+')
        index=1;

    while(str[index]>='0' && str[index]<='9')
    {
        num = num*10 + (str[index]-'0');
        index++;
    }
    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;
}