整理出的各種類型的位元組數

// LINUX中 GCC類型長度(位元組)

// type         x86_sizeof(type)    x64_sizeof(type)

// char         1                   1

// short        2                   2

// int          4                   4

// long         4                   8

// void*        4                   8

// long long    8                   8

// float        4                   4

// double       8                   8

//__GNUC__

/nux

//__i386__  是x86

//__x86_64__  是X64

//windows VC編譯器

// long         4                   4