Untitled

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

int main() {
    string firstName, lastName;
    int number;

    // Input first name, last name, and a four-digit number
    cin >> firstName >> lastName >> number;

    // Get the first six characters of the first name, or the entire first name if it's shorter than 6 characters
    string firstPart = firstName.substr(0, 6);

    // Get the first letter of the last name
    char lastPart = lastName[0];

    // Get the last digit of the number using the modulus operator
    int lastDigit = number % 10;

    // Generate and output the login name
    cout << "Your login name: " << firstPart << lastPart << "_" << lastDigit << endl;

    return 0;
}