string length() in C++

length(): It returns the number of characters in the string, not including any 

null-termination in the string.

Parameters: No parameters are required for this function.

Syntax:

str.length()

For Example:

str = "abc"

str.length() = > It returns 3

Approach

C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    string str = "abc";

    cout << str.length() << "\n";
    

    return 0;
}