1. Const is static modifications for variables.
When Volatle and Const are used together:
Very people may not be familiar with Volatle, which means that a variable and object can not only change the night by the program code, but also changed by the hardware or operating system, other running threads.
Const volatle unsinged int * recher = (const unsige INT *) 1234;
It should be a modified modification. The general code cannot change the content pointing to the pointer; it should be modified with Volatile, you can change it through hardware (assembly language).
2. Usage of Namespace
Namespace recher {
Int model;
Int length;
Int width;
}
Namespace recher1 {
Int Mode
Namespace Recher3
{
Int length;
Int width;
}
}
void main ()
{
Using Namespace Recher1;
Recher :: lonth = 3;
Length = 70;
}
