added options for single player and two player

main.c

@@ -24,8 +24,14 @@ int free_spaces();
 
 int main(int argc, char *argv[]){
     char flag = ' ';
+    int players;
     clear_board();
     
+    printf("How many players? (1/2)\n> ");
+    scanf("%d", &players);
+
+    //this could be tidier i think
+    if(players == 1){
         do{
             flag = check_win();
             if(free_spaces() == 0){
@@ -35,7 +41,24 @@ int main(int argc, char *argv[]){
             print_board();
 
             player_choice('X');
+            print_board();
+
+            cpu_choice('O');
+            flag = check_win();
+            print_board();
+
+        } while(flag == ' ');
+
+    } else if(players == 2){
+            do{
                 flag = check_win();
+                if(free_spaces() == 0){
+                    break;
+                }
+
+                print_board();
+
+                player_choice('X');
                 print_board();
 
                 player_choice('O');
@@ -43,7 +66,7 @@ int main(int argc, char *argv[]){
                 print_board();
 
             } while(flag == ' ');
-
+        }
     if(flag == ' ') 
         printf(BOLDMAGENTA "\nNo-one won!" RESET);
     else