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TicTacToe.cpp
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TicTacToe.cpp
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#include <bits/stdc++.h>
using namespace std;
void Take_Input();
int Valid_Input();
bool Check_Winner();
void Print_Board();
void Reset_Board();
char board[9];
void Take_Input(string &name, int &pos_left){
// Function to proceed the game forward //
cout << name << "'s turn\nSelect your position(1-9) : ";
int pos = Valid_Input();
// For every turn of X, positions left will be an odd number //
board[pos-1] = (pos_left % 2 == 0) ? 'O' : 'X';
pos_left--;
// To show the updated game //
Print_Board();
return;
}
int Valid_Input(){
// Function to take a valid position as input //
int pos;
while(true){
cin >> pos;
if(pos > 9 || pos < 0){
// If the input doesn't lie between 0 and 9 //
cout << "Please choose a valid number : ";
continue;
}
else if(board[pos-1] != ' '){
// If the input position is already chosen //
cout << "Please choose an available position: ";
continue;
}
else break;
}
return pos;
}
bool Check_Winner(){
// Function to check if the game ends //
// Checking Rows //
if(board[0] != ' ' && board[0] == board[1] && board[1] == board[2]) return true;
if(board[3] != ' ' && board[3] == board[4] && board[4] == board[5]) return true;
if(board[6] != ' ' && board[6] == board[7] && board[7] == board[8]) return true;
// Checking Columns //
if(board[0] != ' ' && board[0] == board[3] && board[3] == board[6]) return true;
if(board[1] != ' ' && board[1] == board[4] && board[4] == board[7]) return true;
if(board[2] != ' ' && board[2] == board[5] && board[5] == board[8]) return true;
// Checking Diagonals //
if(board[4] != ' ' && board[4] == board[0] && board[4] == board[8]) return true;
if(board[4] != ' ' && board[4] == board[2] && board[4] == board[6]) return true;
// If the game doesn't end //
return false;
}
void Print_Board(){
// Function to print the board //
cout << "\n\n";
cout << " | | \n " << board[0] << " | " << board[1] << " | " << board[2] << " \n _ _ _|_ _ _|_ _ _\n";
cout << " | | \n " << board[3] << " | " << board[4] << " | " << board[5] << " \n _ _ _|_ _ _|_ _ _\n";
cout << " | | \n " << board[6] << " | " << board[7] << " | " << board[8] << " \n | | \n";
cout << "\n\n";
return;
}
void Reset_Board(){
// Function to reset the game //
for(int i = 0; i < 9; i++) board[i] = '0' + (i+1);
return;
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
Reset_Board();
string X, O;
int pos_left = 9;
// Printing the title of the game //
cout << "\n=============================\n|| TIC TAC TOE ||\n=============================\n\n";
Print_Board();
for(int i = 0; i < 9; i++) board[i] = ' ';
cout << "\n\nEnter the name of the first player(X) : ";
cin >> X;
cout << "\nEnter the name of the second player(O) : ";
cin >> O;
Print_Board();
while(true){
// For every odd turn, positions left will be odd //
(pos_left % 2 != 0) ? Take_Input( X, pos_left) : Take_Input( O, pos_left);
// If the game ends, we can exit the loop //
if(Check_Winner()){
(pos_left % 2 == 0) ? cout << X : cout << O;
cout << " Wins!!! \n";
break;
}
// If there is no winner //
if(!pos_left){
cout << "It's a Tie :( \n";
break;
}
}
int ans;
cout << "\nWanna play again?\n";
cout << "1.YES\n2.NO\n";
cin >> ans;
// If the user wishes to play again then run the whole code again//
if(ans == 1) return main();
return 0;
}
// END OF CODE //