C++ Program to find length of string without using strlen function


In this program, You will learn how to find length of string without using strlen function in C++.


while (str[i] != '\0') { i++; }

Hello: string length = 5


Example: How to find length of string without using strlen function in C++

Run it Now
#include<iostream>
using namespace std;

int main() {

    int i = 0;
    char str[100];

    cout << "Enter a String :";
    cin.getline(str, 100);

    while (str[i] != '\0') {
        i++;
    }
    cout << "\nThe String Length is :" << i;

    return 0;
}

Output:

Enter a String :Learn C++
The String Length is :9