Programs like mario and greedy that I've completed will run but now the code can't be edited. I've been working on caesar and the part I've completed runs, but when I go back to gedit to edit the code I get a big blob of code that's mostly red with dire warnings about damage. In other words,
./greedy will run fine but if I try to open Greedy or another program in gedit I get this big red threat.
I've been away from the program for a couple of weeks so maybe I'm doing it wrong. I get the red blob when I open greedy, I get the code OK when I open
greedy.c; but when I make changes in
greedy.c and save it, nothing changes when I run it