Two methods to judge the size end

Clarify the concept of large and small ends ：

The small end ： The low order data is stored at the low address , The high bit is stored at the high address

Big end ： The high data is stored at the low address , The low address is stored at the high address

#include<stdio.h>
#include<windows.h>

void project1()
{
	int a = 1, count = 0;
	count = *(char*)&a;
	if (count == 1)
	{
		printf(" The small end \n");
	}
	else
	{
		printf(" Big end \n");
	}
}

void project2()
{
	union un
	{
		char a;
		int b;
	}u1;
	u1.b = 1;
	if (u1.a == 1)
	{
		printf(" The small end \n");
	}
	else
	{
		printf(" Big end \n");
	}
}

int main()
{
	project1();
	project2();
	system("pause");
	return 0;
}