word_presentation

x is integer, x = 0x01234567

Big endian

address	0x100	0x101	0x102	0x103	0x104
…	01	23	45	67	…

Little endian

address	0x100	0x101	0x102	0x103	0x104
…	67	45	23	01	…

The example to show what type is on your computer.

#include<stdio.h>

int main()
{
    int a = 0x01234567;
    char *p = &a;
    int i=0;

    for(i=0;i<4;i++)
        printf("%.2x",*p++);
    return 0;
}