Question

Consider the following C declaration:

struct
{
short s[5];
union
{
float y;
long z;
} u;
} t;

Assume that objects of the short, float and long occupy 2 bytes, 4 bytes and 8 bytes respectively. The memory requirement for variable t, ignoring alignment consideration is

• A. 10 bytes
• B. 22 bytes
• C. 18 bytes
• D. 14 bytes

Answer 1

The correct option is C 18 bytes

Here structure creates the minimum of array and union, but union only creates the minimum for only 'long z' which is max.
So minimum required =18