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

int main()
{
	string text = "\0";


	cout << "Bitte Text eingeben (ggfs. mit Leerzeichen): ? ";
	getline(cin, text);

	cout << "Der Text nach der Umwandlung: ";
	for (int i = 0; i < text.length(); i++) {


		if (text[i] >= '0' && text[i] <= '9')
		{
			text[i] = '.';
			cout << text[i];

		}else if (text[i] == '!' || text[i] == '?') {}

		else if (text[i] >= 'a' && text[i] <= 'z')
		{

			cout << text[i] << text[i];

		}else if (text[i] >= 'A' && text[i] <= 'Z')
		{


			cout << text[i] << text[i] << text[i];
		}else if (text[i] == ' ')
		{
			text[i] = '_';
			cout << text[i];
		}

		else{
			cout << text[i];
		}


		}

	cout << endl;

	system ("pause");
	return 0;

}