Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
232 views
in Technique[技术] by (71.8m points)

c - self referential struct definition?

I haven't been writing C for very long, and so I'm not sure about how I should go about doing these sorts of recursive things... I would like each cell to contain another cell, but I get an error along the lines of "field 'child' has incomplete type". What's up?

typedef struct Cell {
  int isParent;
  Cell child;
} Cell;
Question&Answers:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

Clearly a Cell cannot contain another Cell as it becomes a never-ending recursion.

However a Cell CAN contain a pointer to another Cell.

typedef struct Cell {
  bool isParent;
  struct Cell* child;
} Cell;

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...