How can I use a program to check the storage mode of the current system?

Please write a C function. If the processor is big_endian, 0 is returned; If little_endian, 1 is returned.

First, according to the above definition of the size-end mode, assume that the int type variable I is initialized to 1.
We can fully utilize the characteristics of the Union data: the starting addresses of all Members are consistent.
The answer is as follows:
Int checksystem ()

{
Union check
{
Int I;
Char ch;
} C;
C. I = 1;

Return (C. CH = 1 );

}
Now you can use this function to test the storage mode of your current system.

Of course, you can also directly view the memory without using a function to determine the storage mode of the current system.

 

Peer about big end small end detailed explanation http://blog.163.com/law_abidingcamel/blog/static/114132654200932010282750/