Question

I’ve declared an array of structs as so:

typedef struct{
int source;
int dest;
int type;
int port;
char data;
}test;

test packet[50];

and I’m trying to access the array and print it to the screen as such:

for (p = 0; p < i; p++)
{
    printf("%i", packet[p]);
}

But I’m not getting what I expect. I’m very new at C so I’m sorry for any problems with this post. Just ask for more information and I’ll give it. Have I got the logic completely wrong with this?

In my head I’ve created an 50 instances of the struct in an array with each element of the array containing the 5 variables in the struct.

Answer 1

It’s been ages since I’ve done C but I don’t think it works that way. You might want to print the struct’s member variables one by one.

for (p = 0; p < i; p++)
{
  printf("%i\n", packet[p].source);
  printf("%i\n", packet[p].dest);
  printf("%i\n", packet[p].type);
  printf("%i\n", packet[p].port);
}

Or better yet, make a method, call it something like printTest() and have it do the above.

In your example above, you’re trying to print the whole object, which wouldn’t work.