New Game - Cycles (Like Tron) - Coming Soon

To all the other game devs out there: Don't laugh at my too hard.  This is the first video game Ive ever attempted to write.
Its coming along but still lots to be done.  I think ill run into a space issue due to the grid storage I'm using so any advice to make that
more efficient would be helpful.  I'm currently doing:  char grid[144][144];