Length of each data type on machines with different digits

Source: Internet
Author: User

Test results in the GCC environment:

32-bit Platform 64-bit Platform
Char, 1 byte, 8 bits Char 1 byte
Short 2-byte 16-bit Short 2 bytes
Int 4-byte 32-bit Int 4 bytes
Float 4 bytes 32-bit Float 4 bytes
Double 8 bytes 64-bit Double 8 bytes 64-bit
Long 4 bytes
Long 8 bytes (difference)
Long long 8 bytes Long long 8 bytes
Pointer 4 bytes
8 bytes pointer (difference)

    1. The difference between machines with different digits is mainly the pointer length, because the addressable space is different.
    2. The length of int depends on the compiler.

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