Suggest three operation to get the value of lower 16 bit and upper 16 bit short/word of a 32 bit int variable.

Method 1:

unsigned long l_val;
unsigned short s_low, s_high;
s_low = (unsigned short )l_val;
s_high = (unsigned short )(l_val >> 16);

Method 2:

struct two_short
{
  unsigned short low;
  unsigned short high;
};
unsigned long l_val;
unsigned short s_low, s_high;
struct two_short * p_long;
p_long = (Struct two_short *)&l_val;
s_high = p_long->high;
s_low = p_long->low;

Method 3:

unsigned long l_val;
unsigned short s_low, s_high;
unsigned short * p_short;
p_long = (unsigned short *)&l_val;
s_low = *p_short;
p_short++;
s_high = *p_short;

Please note method 3 only works for only little endian processors.

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