Convert String to Integer

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

int custom_atoi(const char *str) {
    // Your logic here
    int result=0;
    int sign = 1;
    int i=0;

    if(str[0]=='+') {sign = 1;i=1;}
    if(str[0]=='-') {sign = -1;i=1;}

    while(str[i]>='0'&&str[i]<='9'){
        result = result*10+str[i]-'0';
        i++;
    }
    return sign*result;
}

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;
}