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

// prototypes
string encode(int num, string orig);
void printOutput(string output);

int main(int argc, char *argv[])
{
    cout << "Enter number" << '\n';
    int k = 0;
    cin >> k;
    cout << "Enter text" << '\n';
    // The number of times we are going to interate the characters in the argument of the program
    string text;
    // Get user input of the string we will encode
    cin.ignore (numeric_limits<streamsize>::max(), '\n');
    getline (cin,text);
    printOutput(encode(k,text));
    return 0;

}

string encode(int num, string orig) {
    string ret = "";
    for (int i = 0; i < orig.length();  i++)
    {
        // Only process if we have a character
        if (isalpha(orig[i]))
        {
            // Shift taking into account capital letters
            if (isalpha(orig[i] + (num % 26)))
            {
            ret += (orig[i] + (num % 26));
            }
            else
            {
            ret += (orig[i] + ((num % 26) - 26));
            }
        }
        else
        {
            ret += (orig[i]);
        }

    }
    return ret;
}

void printOutput(string output) {
    cout << "Here it is:" << '\n';
    cout << output << '\n';
}