查看机器是大端还是小段

showBigOrLittleEnd.c

#include<stdio.h>

typedef unsigned char * byte_pointer;

int showBigOrLittleEnd()
{
        int i = 0x01;
        byte_pointer bp = (byte_pointer) &i;
        if (bp[0] == 0x01)
                return 1;
        else
                return 0;
}
void main()
{
        if (showBigOrLittleEnd() == 1)
                printf("little end\n");
        else
                printf("big end\n");
}