Cast operator
Problem: given int i, access a particular byte big-endian little-endian
int i = 0x1234abcd; Address Contents
Is this big-endian or little-endian?  How can we tell? 1000 12 cd
By definition, if we look at the bits in i, the leftmost bits are 1001 34 ab
0001 0010 (big- or little-endian) 1002 ab 34
Value is independent of byte order 1003 cd 12
Another way to look at 4 bytes: 1004    
char c[4]; 1005    
What about 1006    
c[0] = (char) i; 1007