Thread: union inside structure

This is what I found in my book.
Suppose we wish to store information about employees in an organization.

Name Grade Age
If grade=HSK(Highly skilled)
hobby name
credit card number
If Grade=SSK(Semi skilled)
Vehicle no.
Distance from Company

We can use a single structure for it but then it would lead to wastage of memory coz either hobby name & credit card no. or vehicle no. & distance from com. is used at a time. Both of them are never used simultaneously. So, here union inside structure can be used effectively:

Code:

struct info1
{
char hobby[10];
int crcardno;
};
struct info2
{
char vehno[10];
int dist;
};
union info
{
struct info1 a;
struct info2 b;
};
struct emp
{
char n[20];
char grade[4];
int age;
union info f;
};
struct emp e;