C++ code for find the Length of the string without using strlen() function.

#include <iostream>
#include <string>
using namespace std;
int main() {
    string str;
    int length = 0;
    cout << "Enter a string: " << endl;
    getline(cin, str);
    // this will take only one word               cin>>str;
    for (int i = 0; str[i] != '\0'; i++) {
        length++;
    }
    // or we can write                              length = str.length();
    cout << "Length of string: " << length << endl;
    return 0;
}