File I/O problem

[Texan40]

char chapter[1]; // this only allocates space for 1 character, doesn't leave space for a null terminator so it can't be used/accessed as a cstring array.

[Lowest0ne]

When I write more into the file wouldn't I need a Array anyway?

Actually, I think you should set the game aside for now. Learn about classes and make yourself a FileIO class.