How to use a struct inside another struct?

Question

I want to use a nested structure but i dont know how to enter data in it, for example:

struct A {
    int data;
    struct B;
};
struct B {
    int number;
};


        

Answer 1

I have the somewhat like the following code running for a while live now and it works.

//define a timer
struct lightTimer {
  unsigned long time;                                                 //time in seconds since midnight so range is 0-86400
  byte          percentage;                                           // in percentage so range is 0-100
};

//define a list of timers
struct lightTable {
  lightTimer timer[50];
  int        otherVar;
};

//and make 5 instances
struct lightTable channel[5];                           //all channels are now memory allocated

@zx485: EDIT: Edited/cleaned the code. Excuse for the raw dump.

Explanation:

Define a lightTimer. Basically a struct that contains 2 vars.

struct lightTimer {

Define a lightTable. First element is a lightTimer.

struct lightTable {

Make an actual (named) instance:

struct lightTable channel[5];

We now have 5 channels with 50 timers.

Access like:

channel[5].timer[10].time = 86400;
channel[5].timer[10].percentage = 50;
channel[2].otherVar = 50000;