Defining an array of structures in C?

Question

main.h

#define  DATA  struct   data
DATA
{
  int id;
  char data;
}

main.c

DATA *listOfData[100];

So at this

Answer 1

I'm not sure why printf would just freeze, but there's a couple of things wrong with this. First, all the pointers in your DATA* array are uninitialized. You probably intended to make an array of DATA, instead of an array of DATA pointers:

DATA listOfData[100];

You also didn't end the struct with a semicolon, so it seems unlikely that this would even compile:

#define  DATA  struct   data
DATA
{
  int id;
  char data;
};

Finally, you're using printf in a rather unsafe way; the first argument needs to be a format string, or you can get weird behavior if the first argument has a % in it:

printf("%c\n", listOfData[5].data);