An int type four bytes, indicating that hexadecimal can be 0xfffffffff
In the hexadecimal, the number of rights can be expressed as => Hexadecimal binary
0x1 10x2 100x4 1000x8 1000
And 0x1 0x2 0x4 0x8 = 0xF
Thereof
0xffffFFF = 0x1 0x2 0x4 0x8 0x10 0x20 0x40 0x80 .................. 0x1000 0000 0x2000 000 0x4000 0000 0x8000 0000
So a value of an int type can represent 4x8 = 32 kinds of permissions, the maximum authority is 8000 0000
right? ?
