#include<stdio.h> #include<conio.h> void
Board(); void PlayerX(); void PlayerO(); void
Player_win(); void check(); int
win=0,wrong_X=0,wrong_O=0,chk=0; char name_X[30]; char
name_O[30]; int pos_for_X[3][3]; int pos_for_O[3][3];
int pos_marked[3][3]; void main() { int i,ch,j; char
ans; /* clrscr(); printf(“nttttTIC TAC TOE”);
printf(“ntttt”); for(i=1;i<=11;i++) {
delay(10000); printf(“*”); }*/ do { clrscr();
printf(“nttttTIC TAC TOE”); printf(“ntttt”);
for(i=1;i<=11;i++) { delay(10000); printf(“*”); }
printf(“n1.Start The Game”); printf(“n2.Quit The
Game”); printf(“nEnter your choice(1-2) : “);
scanf(“%d”,&ch); switch(ch) { case 1: chk=0; win=0;
for(i=1;i<=3;i++) { for(j=1;j<=3;j++) {
pos_for_X[i][j]=0; pos_for_O[i][j]=0;
pos_marked[i][j]=0; } } printf(“nn”); clrscr();
printf(“nEnter the name of the player playing for
‘X’: “); fflush(stdin); gets(name_X); printf(“nEnter
the name of the player playing for ‘O’: “);
fflush(stdin); gets(name_O); Board(); for(;;) {
if(win==1) break; check(); if(chk==9) {
printf(“ntttMATCH DRAWS!!”); printf(“nPress any
key….”); break; } else chk=0; printf(“nTURN FOR
%s:”,name_X); PlayerX(); do { if(wrong_X!=1) break;
wrong_X=0; printf(“nTURN FOR %s:”,name_X); PlayerX();
}while(wrong_X==1); check(); if(chk==9) {
printf(“ntttMATCH DRAWS”); printf(“nPress any
key….”); break; } else chk=0; printf(“nTURN FOR
%s:”,name_O); PlayerO(); do { if(wrong_O!=1) break;
wrong_O=0; printf(“nTURN FOR %s:”,name_O); PlayerO();
}while(wrong_O==1); } Board(); if(win!=1) {
printf(“ntttMATCH DRAWS!!”); printf(“nPress any
key…….”); } getch(); break; case 2:
printf(“nnntttThank You For Playing The Game.”);
printf(“nttt###############################”);
getch(); exit(1); break; } printf(“nWant To Play(Y/N) ?
“); fflush(stdin); scanf(“%c”,&ans); }while(ans==’y’
|| ans==’Y’); } void Board() { int i,j; clrscr();
printf(“nttttTIC TAC TOE BOARD”);
printf(“ntttt*****************”); printf(“nnn”);
printf(“nttt 1t 2t 3”); for(i=1;i<=3;i++) {
printf(“n ttt _____________________________”);
printf(“n tttºt ºt ºt º”);
printf(“ntt%dt”,i); for(j=1;j<=3;j++) {
if(pos_for_X[i][j]==1) { printf(” X”); printf(” “); }
else if(pos_for_O[i][j]==1) { printf(” O”); printf(” “);
} else { printf(” “); continue; } } printf(“ntttºt
ºt ºt º”); }
printf(“nttt——————————“);
Player_win(); } void PlayerX() { int row,col; if(win==1)
return; printf(“nEnter the row no. : “); fflush(stdin);
scanf(“%d”,&row); printf(“Enter the column no. : “);
fflush(stdin); scanf(“%d”,&col);
if(pos_marked[row][col]==1 || row<1 || row>3 ||
col<1 || col>3) { printf(“nWRONG POSITION!! Press
any key…..”); wrong_X=1; getch(); Board(); } else {
pos_for_X[row][col]=1; pos_marked[row][col]=1; Board();
} } void PlayerO() { int row,col; if(win==1) return;
printf(“nEnter the row no. : “); scanf(“%d”,&row);
printf(“Enter the column no. : “); scanf(“%d”,&col);
if(pos_marked[row][col]==1 || row<1 || row>3 ||
col<1 || col>3) { printf(“nWRONG POSITION!! Press
any key….”); wrong_O=1; getch(); Board(); } else {
pos_for_O[row][col]=1; pos_marked[row][col]=1; Board();
} } void Player_win() { int i; for(i=1;i<=3;i++) {
if(pos_for_X[i][1]==1 && pos_for_X[i][2]==1
&& pos_for_X[i][3]==1) { win=1;
printf(“nnRESULT: %s wins!!”,name_X); printf(“nPress
any key…………”); return; } } for(i=1;i<=3;i++)
{ if(pos_for_X[1][i]==1 && pos_for_X[2][i]==1
&& pos_for_X[3][i]==1) { win=1;
printf(“nnRESULT: %s wins!!”,name_X); printf(“nPress
any key…………”); return; } } if(pos_for_X[1][1]==1
&& pos_for_X[2][2]==1 &&
pos_for_X[3][3]==1) { win=1; printf(“nnRESULTL: %s
wins!!”,name_X); printf(“nPress any key……”);
return; } else if(pos_for_X[1][3]==1 &&
pos_for_X[2][2]==1 && pos_for_X[3][1]==1) {
win=1; printf(“nnRESULT: %s wins!!”,name_X);
printf(“nPress any key…..”); return; }
for(i=1;i<=3;i++) { if(pos_for_O[i][1]==1 &&
pos_for_O[i][2]==1 && pos_for_O[i][3]==1) {
win=1; printf(“nnRESULT: %s wins!!”,name_O);
printf(“nPress any key…..”); return; } }
for(i=1;i<=3;i++) { if(pos_for_O[1][i]==1 &&
pos_for_O[2][i]==1 && pos_for_O[3][i]==1) {
win=1; printf(“nnRESULT: %s wins!!”,name_O);
printf(“nPress any key…..”); return; } }
if(pos_for_O[1][1]==1 && pos_for_O[2][2]==1
&& pos_for_O[3][3]==1) { win=1;
printf(“nnRESULT: %s wins!!”,name_O); printf(“nPress
any key…..”); return; } else if(pos_for_O[1][3]==1
&& pos_for_O[2][2]==1 &&
pos_for_O[3][1]==1) { win=1; printf(“nnRESULT: %s
wins!!”,name_O); printf(“nPress any key…..”); return;
} } void check() { int i,j; for(i=1;i<=3;i++) {
for(j=1;j<=3;j++) { if(pos_marked[i][j]==1) chk++;
else continue; } } }

Just compile it using turbo C compiler and enjoy