#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include <windows.h>
int board[10] = {2,2,2,2,2,2,2,2,2,2};
int turn = 1,flag = 0;
int player,comp;
void menu();
void go(int n);
void start_game();
void check_draw();
void draw_board();
void player_first();
void put_X_O(char ch,int pos);
COORD coord={0,0}; // this is global variable
//center of axis is set to the top left cornor of the screen
void gotoxy(int x,int y)
{
coord.X=x;
coord.Y=y;
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),coord);
}
void main()
{
system("cls");
menu();
getch();
}
void menu()
{
int choice;
system("cls");
printf("\n--------MENU--------");
printf("\n1 : Play with X");
printf("\n2 : Play with O");
printf("\n3 : Exit");
printf("\nEnter your choice:>");
scanf("%d",&choice);
turn = 1;
switch (choice)
{
case 1:
player = 1;
comp = 0;
player_first();
break;
case 2:
player = 0;
comp = 1;
start_game();
break;
case 3:
exit(1);
default:
menu();
}
}
int make2()
{
if(board[5] == 2)
return 5;
if(board[2] == 2)
return 2;
if(board[4] == 2)
return 4;
if(board[6] == 2)
return 6;
if(board[8] == 2)
return 8;
return 0;
}
int make4()
{
if(board[1] == 2)
return 1;
if(board[3] == 2)
return 3;
if(board[7] == 2)
return 7;
if(board[9] == 2)
return 9;
return 0;
}
int posswin(int p)
{
// p==1 then X p==0 then O
int i;
int check_val,pos;
if(p == 1)
check_val = 18;
else
check_val = 50;
i = 1;
while(i<=9)//row check
{
if(board[i] * board[i+1] * board[i+2] == check_val)
{
if(board[i] == 2)
return i;
if(board[i+1] == 2)
return i+1;
if(board[i+2] == 2)
return i+2;
}
i+=3;
}
i = 1;
while(i<=3)//column check
{
if(board[i] * board[i+3] * board[i+6] == check_val)
{
if(board[i] == 2)
return i;
if(board[i+3] == 2)
return i+3;
if(board[i+6] == 2)
return i+6;
}
i++;
}
if(board[1] * board[5] * board[9] == check_val)
{
if(board[1] == 2)
return 1;
if(board[5] == 2)
return 5;
if(board[9] == 2)
return 9;
}
if(board[3] * board[5] * board[7] == check_val)
{
if(board[3] == 2)
return 3;
if(board[5] == 2)
return 5;
if(board[7] == 2)
return 7;
}
return 0;
}
void go(int n)
{
if(turn % 2)
board[n] = 3;
else
board[n] = 5;
turn++;
}
void player_first()
{
int pos;
check_draw();
draw_board();
gotoxy(30,18);
printf("Your Turn :> ");
scanf("%d",&pos);
if(board[pos] != 2)
player_first();
if(pos == posswin(player))
{
go(pos);
draw_board();
gotoxy(30,20);
//textcolor(128+RED);
printf("Player Wins");
getch();
exit(0);
}
go(pos);
draw_board();
start_game();
}
void start_game()
{
// p==1 then X p==0 then O
if(posswin(comp))
{
go(posswin(comp));
flag = 1;
}
else
if(posswin(player))
go(posswin(player));
else
if(make2())
go(make2());
else
go(make4());
draw_board();
if(flag)
{
gotoxy(30,20);
//textcolor(128+RED);
printf("Computer wins");
getch();
}
else
player_first();
}
void check_draw()
{
if(turn > 9)
{
gotoxy(30,20);
//textcolor(128+RED);
printf("Game Draw");
getch();
exit(0);
}
}
void draw_board()
{
int j;
for(j=9;j<17;j++)
{
gotoxy(35,j);
printf("| |");
}
gotoxy(28,11);
printf("-----------------------");
gotoxy(28,14);
printf("-----------------------");
for(j=1;j<10;j++)
{
if(board[j] == 3)
put_X_O('X',j);
else
if(board[j] == 5)
put_X_O('O',j);
}
}
void put_X_O(char ch,int pos)
{
int m;
int x = 31, y = 10;
m = pos;
if(m > 3)
{
while(m > 3)
{
y += 3;
m -= 3;
}
}
if(pos % 3 == 0)
x += 16;
else
{
pos %= 3;
pos--;
while(pos)
{
x+=8;
pos--;
}
}
gotoxy(x,y);
printf("%c",ch);
}
Monday, July 31, 2017
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Tic tac toe game in C
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