How to get the length of a string in C++

In this tutorial, we are going to learn about two different ways to find the length of a string in C++.

Using the length() function

In c++, we can use the built-in length() function to get the length of a given string which is defined inside the string.h header file.

Length means the total number of characters in a given string.

Here is an example, that gets the length of a string gowtham:

#include <iostream>
#include <string.h>
using namespace std;

int main()
{
   string user = "gowtham";
    int length = user.length();
    cout << "The length of a user string is: " << length;
    return 0;
}

Output:

The length of a user string is: 7

Similarly, we can also use the size() function to get the length of a string in C++.

#include <iostream>
#include <string.h>
using namespace std;

int main()
{
   string user = "gowtham";
    int length = user.size();
    cout << "The length of a user string is: " << length;
    return 0;
}