Integer Data in C ++

I found that in C ++ (at least in this environment I am using: wink2003 server, vc6.0 _ en, amd2000 + ):

The values of int, long int, unsigned int, unsigned long int, signed int, and signed long int are the same,

It is the same as the long integer of each type. ([x] is used to indicate the range of values that X can represent)

That is, [int] = [long int] = (-2147483648 ~ 2147483647), [unsigned int] = [unsigned long int] = (0 ~ 4294967295 ),

[Signed int] = [signed long int] = (-2147483648 ~ 2147482647), that is, the default value of the int type is the same as that of the long int type.