大端存储-小端存储

#include<stdio.h>


int system_check()
{
    union sy
    {
        int i;
        char c;
    } ;

    union sy ch;
    ch.i=1;
   return (ch.c==1);
}
int main ()
{

    int i=system_check();
    printf("%d\n",i);
    return 0;
}