GATE EXAM PREPARATION IN "C" - C declaration(GATE CS 2000)

 Consider the following C declaration

struct {     short s [5]     union {          float y;          long z;     }u; } t; Assume that objects of the type short, float and long occupy 2 bytes, 4 bytes and 8 bytes, respectively. The memory requirement for variable t, ignoring alignment considerations, is  (a) 22 bytes (b) 14 bytes (c) 18 bytes (d) 10 bytes Answer: (c) Explanation: Short array s[5] will take 10 bytes as size of short is 2 bytes. Since u is a union, memory allocated to u will be max of float y(4 bytes) and long z(8 bytes). So, total size will be 18 bytes (10 + 8).