Can someone help me create a good example to learn structures? 1

[Rmcta]

I understand that I can use structures to declare a group of variables of different data type:

struct acquaintance{
char name[10];
int year_met;
char activity_group:
};

But how do I proceed now? To learn structures I wish to do the following:

With a printf I ask the user name, year_met, activity_group. Example:

Ann 1992 dancing
Helen 1994 work
Bob 1881 skating

Then I want to create a function that calculates for how many years I have known the person, so I can learn how to pass structures to functions.

I don't know if this is a good example but I really need to learn structures and don't know how to create a good example that includes structures, arrays, pointers and functions.

Can someone guide me through this subject?

Thank you

 

[ArkM]

You can include and use structures, arrays, pointers and functions (and recursion, and dynamic storage too on a classic binary tree implementation.
Add struct acquaintance* pleft, *pright; members in your declaration - use, for example:

typedef struct acquaintance
{
   struct acquaintance* pleft, *pright;
   char name[10];       /* or more, use #define NLEN  */
   int  year_met;
   char activity_group: /* better use int or short... */
} Node;

Read about a binary search in any (school level) book (or in Knuth's "Art of Programming", or search INET.
Pass pointer to a structure, not a structure (by value) via function parameters - that's all...
It's a very instuctive task...

 

[Rmcta]

Thank you!