tic tac toe.txt

/*If you find any bug, do send me an s.s. of your entire played game*/
/*
Game creator: Mehrin Farzana
Game created on: 21-4-2023
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <ctype.h>

char room[9] = "123456789";
char name[2][101];
int move=0;

int the_game();
void player_move_against_computer();
void player_move_against_human();
int computer_move();
int check();
int check_draw();
void board();
int enter_name();

int main(){
    srand(time(NULL));
    printf("Welcome to a game of Tic-Tac-Toe!\nPlayer 1, Try to write 'EID' horizontally, vertically or diagonally to WIN!\n");
    printf("Player 2, Try to write 'XXX' horizontally, vertically or diagonally to WIN!\n");
    the_game();
    return 0;
}

int enter_name(){
    char computer[9];
    int flag=0;

    printf("Player 1, plz enter your name here: ");
    scanf(" %[^\n]s", name[0]);
    printf("To play against COMPUTER, enter in name for 2nd player 'computer'.\n");
    printf("Player 2, plz enter your name here: ");
    scanf(" %[^\n]s", name[1]);
    for(int i=0; i<8; i++)
        computer[i]=toupper(name[1][i]);
    computer[8]='\0';
    if(strcmp("COMPUTER", computer)==0)
        flag=1;
    return flag;
}

void board(){
    printf("\n");
    for(int i=0; i<9; i+=3){
        printf(" %c | %c | %c \n", room[i], room[i+1], room[i+2]);
        if(i<4)
            printf("---|---|---\n");
    }
     printf("\n");
}

int check_draw(int check){
    int flag=0;
    if(!check) return 1;
    for(int i=0; i<9; i++){
        if(room[i]!='E' && room[i]!='I' && room[i]!='D' && room[i]!='X'){
            flag=1;
            break;
        }
    }

    if(!flag){
        printf("Match Draw!!!\n");
        return 0;
    }

}

int check(){
        if((room[0]=='E' && room[1]=='I' && room[2]=='D') || (room[3]=='E' && room[4]=='I' && room[5]=='D') || (room[6]=='E' && room[7]=='I' && room[8]=='D') || (room[0]=='E' && room[3]=='I' && room[6]=='D') || (room[1]=='E' && room[4]=='I' && room[7]=='D') || (room[2]=='E' && room[5]=='I' && room[8]=='D') || (room[0]=='E' && room[4]=='I' && room[8]=='D') || (room[2]=='E' && room[4]=='I' && room[6]=='D')){
                printf("%s won the match!\n", name[0]);
                return 0;
}
            else if((room[0]==room[1] && room[0]==room[2]) || (room[3]==room[4] && room[3]==room[5]) || (room[6]==room[7] && room[6]==room[8]) || (room[0]==room[3] && room[0]==room[6]) || (room[1]==room[4] && room[1]==room[7]) || (room[2]==room[5] && room[2]==room[8]) || (room[0]==room[4] && room[0]==room[8]) || (room[2]==room[4] && room [2]==room[6]))
            {
                printf("%s won the match!\n", name[1]);
                return 0;
            }
    return 1;
}

int computer_move(int p){
    if(p==4 && room[p-1]!='E' && room[p-1]!='I'  && room[p-1]!='D'  && room[p-1]!='X'){
        int a[4]={0,2,6,8};
        return a[rand()%3];
    }
    else if((p==0 || p==2 || p==6 || p==8) && room[p-1]!='E' && room[p-1]!='I'  && room[p-1]!='D'  && room[p-1]!='X')
        return 4;
    else{
        int a[9]={0,1,2,3,4,5,6,7,8};
        return a[rand()%8];
    }
}

void player_move_against_human(){
    int p;
    if(move==0)
        printf("Enter the room number where you want to make your move: ");
    else if(move%2==1)
        printf("player 2, Enter room#: ");
    else if(move%2==0)
        printf("player 1, Enter room#: ");
    scanf("%d", &p);
    if(room[p-1]!='E' && room[p-1]!='I'  && room[p-1]!='D'  && room[p-1]!='X' && p>0 && p<10){
        if(move%2==0){
            if(move==0 || move==6)
                room[p-1]='E';
            else if(move==2 || move==8)
                room[p-1]='I';
            else if(move==4)
                room[p-1]='D';
        }

        else if(move%2==1)
            room[p-1]='X';
        move++;
    }
    else{
        printf("Invalid! Try again.\n");
        player_move_against_human();
    }
}

void player_move_against_computer(){
    static int p;
    if(move==0){
        printf("Enter the room number where you want to make your move: ");
        scanf("%d", &p);
    }

    else if(move%2==1){
        p=computer_move(p-1)+1;
        while(room[p-1]=='E' || room[p-1]=='I' || room[p-1]=='D'  || room[p-1]=='X'){
            p=computer_move(p-1)+1;
        }
      printf("COMPUTER's move: %d\n", p);
    }
    else if(move%2==0){
        printf("player 1, Enter room#: ");
        scanf("%d", &p);
    }

    if(room[p-1]!='E' && room[p-1]!='I'  && room[p-1]!='D'  && room[p-1]!='X' && p>0 && p<10){
        if(move%2==0){
            if(move==0 || move==6)
                room[p-1]='E';
            else if(move==2 || move==8)
                room[p-1]='I';
            else if(move==4)
                room[p-1]='D';
        }

        else if(move%2==1)
            room[p-1]='X';
        move++;
    }
    else{
        printf("Invalid! Try again.\n");
        player_move_against_human();
    }
}


int the_game(){
    int a=1, b=1, flag, enter;
    char computer[8];
    flag=enter_name();
    board();
    //
    //    printf("\nharat!\n");
    //printf("%d\n", flag);
    if(flag==1){
        while(a && b){
        a=check();
        b=check_draw(a);
        if(a==0 || b==0) break;
        player_move_against_computer();
        board();
        }
    }
    else if(flag==0){
        while(a && b){
        a=check();
        b=check_draw(a);
        if(a==0 || b==0) break;
        player_move_against_human();
        board();
        }
    }
      printf("\n\nWould you like to play again?\nEnter 1 for YES & 0 for NO\n");
scanf("%d", &enter);
if(enter){
    system("cls");
    strcpy(room, "123456789");
    move=0;
    the_game();
}
else return 0;
}