C++ programming code to remove all characters from string except alphabets

#include <iostream>
#include <string>

int main() {
    std::string inputString, outputString;
    std::cout << "Enter a string: ";
    std::getline(std::cin, inputString);

    for (char character : inputString) {
        if (std::isalpha(character)) {
            outputString += character;
        }
    }

    std::cout << "String after removing non-alphabetic characters: " << outputString << std::endl;

    return 0;
}