gistfile1.hpp

#include <iostream>
#include <string>
using namespace std;
 
int main() {
	string mystring;
	
	int base_value, encrypted_value, key;
	char c, encrypted_c;
	
	mystring = "This is a long string of characters -- now with more punctuation!";
	key = 1;
	
	cout << "This program shifts lowercase things over a character!" << endl;
  
	for (int i=0; i<mystring.size(); i++) {
		c = mystring[i];
		
		// capitalize any lowercase characters
		if (c >= 'a' && c <= 'z') {
			c = c - 32;
		}
		
		if (c >= 'A' && c <= 'Z') {
			base_value = int(c) - 65;
			encrypted_value = (base_value + key) % 26;
			encrypted_c = char(encrypted_value + 65);
		} else {
			base_value = 0;
			encrypted_value = 0;
			encrypted_c = c;
		}

		// print out the current character and ascii value
		cout << c << " (" << base_value << ")" << " -> ";
		
		// print out the new character and ascii value
		cout << encrypted_c << " (" << encrypted_value << ")";
		
		cout << endl;
	}
  
	return 0;
}