I've been programming for a while and would like you to rate my code in C.
It's an old game using a circular data structure.
My code is here :
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
/*
* rows
*
* 7 = 000 000 111
* 56 = 000 111 000
* 448 = 111 000 000
*
* columns
*
* 73 = 001 001 001
* 146 = 010 010 010
* 292 = 100 100 100
*
* diagonals
*
* 84 = 001 010 100
* 273 = 100 010 001
*
*/
int win_code[8] = {7,56,448, 73,146,292, 84,273};
struct _Player{
int cod;
char symbol;
struct _Player *next;
};
typedef struct _Player* Player;
Player player;
char board[9]=" ";
//after add on board: player->cod+=pow(2,index);
int add_board(int index);
// check_win()==false: player=player->next;
int check_win();
void print_board();
int main(){
//Create player 1
player = (Player) malloc(sizeof(Player));
//player 1 variables
player->symbol = 'X';
player->cod = 0;
//Create player 2
//after player 1 is player 2
player->next = (Player) malloc(sizeof(Player));
//player 2 variables
player->next->symbol = 'O';
player->next->cod = 0;
//after player 2 is player 1
player->next->next = player;
/* one struct control two players.
_________________|struct _Player*|_________________
| |
| player=player->next; |
| ___________________________ |
| | | |
| _______|_______ ______\ /______ |
| | | | | |
| | X | | O | |
| |_______________| |_______________| |
| / \ | |
| |___________________________| |
| |
| player=player->next; |
|___________________________________________________|
*/
int index, turn=1;
do{
print_board();
do{
printf("Enter a number from 1 to 9 (Valid).\n");
scanf("%d",&index);
fflush(stdin);
//correct range? try add on board.
}while((index>=1||index<=9)&&!add_board(index));
}while(!check_win()&&turn++<9);
return 0;
}
int add_board(int index){
index--;
//board is empty.
if(board[index]==' '){
//add on board.
board[index]=player->symbol;
/*
| |
2^0|2^1|2^2
---|---|---
2^3|2^4|2^5
---|---|---
2^6|2^7|2^8
| |
*/
player->cod+=pow(2,index);
return 1;
}
return 0;
}
int check_win(){
int x;
for(x=0;x<9;x++){
/*
Example check:
X| |O
O|X| player X cod = 337 = 101010001
X|O|X
player->cod: 101010001
&
win_code[8]: 100010001
---------
100010001 == win_code[8]
*/
if((player->cod&win_code[x])==win_code[x]){
print_board();
printf("\n\t Player: %c Win!\n\n",player->symbol);
return 1;
}
}
//player did not win, next player.
player=player->next;
return 0;
}
void print_board(){
system("cls");
printf("\n\n\t Tic Tac Toe\n\n");
printf("\t | | \n");
printf("\t %c | %c | %c \n",board[0],board[1],board[2]);
printf("\t_____|_____|_____\n");
printf("\t | | \n");
printf("\t %c | %c | %c \n",board[3],board[4],board[5]);
printf("\t_____|_____|_____\n");
printf("\t | | \n");
printf("\t %c | %c | %c \n",board[6],board[7],board[8]);
printf("\t | | \n");
printf("\n");
}