String Length

Medium Recursion PRO

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Problem Statement

Write a C++ recursive function that calculates the length of a string without using built-in `.length()` or `.size()` directly in loops.

Input Format

A single word string S.

Output Format

Print string length.

Constraints

1 <= Length <= 100

Sample Input

programming

Sample Output

Explanation

Calculates string length recursively by stripping leading characters until the null terminator/empty string is reached.

Starter Code

#include <iostream>
#include <string>

int recursiveLength(const std::string& s, int index = 0) {
    // Write your code here
}

int main() {
    std::string s;
    if (std::cin >> s) {
        std::cout << recursiveLength(s) << "n";
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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