My first program.

#include <iostream>
void main()
{
	char SquareA ('a');
	char SquareB ('b');
	char SquareC ('c');
	char SquareD ('d');
	char SquareE ('e');
	char SquareF ('f');
	char SquareG ('g');
	char SquareH ('h');
	char SquareI ('i');
	int playerturn(1);
	bool gameover(true);

	//game
	do
	{
		//prints the game board that we shall be playing our game.

			std::cout << SquareA << "|" << SquareB << "|" << SquareC << std::endl;
			std::cout << "-+-+-" << std::endl;
			std::cout << SquareD << "|" << SquareE << "|" << SquareF << std::endl;
			std::cout << "-+-+-" << std::endl;
			std::cout << SquareG << "|" << SquareH << "|" << SquareI << std::endl;
			// create teh marks
			char playermark;
			if (playerturn == 1) {
				playermark = 'X';
			} else {
				playermark = 'O';
			}
			// turn prompt
			std::cout << "Player" << playerturn << "'s turn:" << std::endl;
			bool ValidMove;
			// loops 'til valid
			do {
				char nextmove;
				std::cin >> nextmove;
				ValidMove = true;
				// make sure its valid
				if (nextmove == 'a' && SquareA == 'a') {
					SquareA = playermark;
				} else if (nextmove == 'b' && SquareB == 'b') {
					SquareB = playermark;
				} else if (nextmove == 'c' && SquareC == 'c') {
					SquareC = playermark;
				} else if (nextmove == 'd' && SquareD == 'd') {
					SquareD = playermark;
				} else if (nextmove == 'e' && SquareE == 'e') {
					SquareE = playermark;
				} else if (nextmove == 'f' && SquareF == 'f') {
					SquareF = playermark;
				} else if (nextmove == 'g' && SquareG == 'g') {
					SquareG = playermark;
				} else if (nextmove == 'h' && SquareH == 'h') {
					SquareH = playermark;
				} else if (nextmove == 'i' && SquareI == 'i') {
					SquareI = playermark;
				} else {
					std::cout << "What are you? Dumb? Try again." << std::endl;
					ValidMove = false;
				}
			} while (!ValidMove);
			gameover = false;
			bool WinGame = true;
			// Game complete?
		if (SquareA != 'a') {
			if (SquareB == SquareA && SquareC == SquareA) {
				gameover = true;
			}
			if (SquareD == SquareA && SquareG == SquareA) {
				gameover = true;
			}
		}
		if (SquareE != 'e') {
			if (SquareA == SquareE && SquareI == SquareE) {
				gameover = true;
			}
			if (SquareB == SquareE && SquareH == SquareE) {
				gameover = true;
			}
			if (SquareD == SquareE && SquareF == SquareE) {
				gameover = true;
			}
			if (SquareC == SquareE && SquareG == SquareE) {
				gameover = true;
			}
		}
		if (SquareI != 'i') {
			if (SquareC == SquareI && SquareF == SquareI) {
				gameover = true;
			}
			if (SquareG == SquareI && SquareH == SquareI) {
				gameover = true;
			}
		}
		// Tie
		if (SquareA != 'a' && SquareB != 'b' && SquareC != 'c' &&
			SquareD != 'd' && SquareE != 'e' && SquareF != 'f' &&
			SquareG != 'g' && SquareH != 'h' && SquareI != 'i' && !gameover)
		{
			gameover = true;
			WinGame = false;
		}

		if (gameover) {
			if (WinGame) {
				std::cout << "Player" << playerturn << " wins!" << std::endl;
			}
			// end board printed
			std::cout << SquareA << "|" << SquareB << "|" << SquareC << std::endl;
			std::cout << "-+-+-"<< std::endl;
			std::cout << SquareD << "|" << SquareE << "|" << SquareF << std::endl;
			std::cout << "-+-+-"<< std::endl;
			std::cout << SquareG << "|" << SquareH << "|" << SquareI << std::endl;

			std::cout << "Game Over!" << std::endl;
			std::cout << "Want to get owned again? (y/n)?" << std::endl;
			char PlayAgain;
			std::cin >> PlayAgain;

			if (PlayAgain == 'y') {
				gameover = false;
				// Clears all
				SquareA = 'a';
				SquareB = 'b';
				SquareC = 'c';
				SquareD = 'd';
				SquareE = 'e';
				SquareF = 'f';
				SquareG = 'g';
				SquareH = 'h';
				SquareI = 'i';
			}
			playerturn = 1;
		} else {
			// alt player
			if (playerturn == 1) {
				playerturn = 2;
			} else {
				playerturn = 1;
			}
		}
	} while (!gameover);
}