Validation

Makaveli.2003 · 05-04-2002, 09:48 AM

At the moment my code looks like this: This code is taken from a noughts and crosses game
--------
display_grid();

count=0;

while(count<9)

{

if(count<9)

{

do{

printf("%s enter you next move, '0's\n",name1); /*asks for m move by name*/

scanf("%d%d",&r0,&c0);

}

while((oxo[r0][c0]!='.')||(oxo[r0][c0]=='X')||(oxo[r0][c0]=='0'));

{

oxo[r0][c0]='0';

}

count++;
------
What I want it to do is recognize if a position on the board is already taken, I know this is the answer (below) but dont know how to re-work the loop and add the below code, ive tried a few things but it doesnt work.

if( r0 != -1 && c0 != -1 )
printf("The place is already occupied\n");

If you require more code it will be provided, just ask.

Thx

Mik · 05-06-2002, 08:30 AM

How about something like this:

Code:

bool valid = false;

while(!valid)
{ 
  printf("%s enter you next move, '0's\n",name1);
  /*asks for m move by name*/ 

  scanf("%d%d",&r0,&c0);

  if (oxo[r0][c0] == '.')
  {
    valid = true;
    oxo[r0][c0]='0'; 
  }
  else
    printf("The place is already occupied\n"); 
}

The code does assume you have initialised all the empty places as the character '.'