C + + Learning notes and thinking

1, built-in type: int float and other programming languages to define their own types

Class Type: A class that declares itself, that is, an abstraction of an object

2, const double *CP means that the CP is a pointer to a const type double type data, not a const pointer

3, typedef string *pstring;

Const Pstring CStr; The declaration is defined as a const pointer to an object of type CStr, where the const adornment is pstring. Equivalent to string *const CStr;

The const pointer can be placed before the type or can be placed after the type string const S1; const string S2;

4, strictly speaking, C + + does not have a multidimensional array, usually known as a multidimensional array is an array of arrays

5, switch structure, only after its last case label or the default label to define the variable is to avoid the occurrence of code skipping the definition and initialization of variables. In this case, you can introduce a block statement if you need to define a variable for a particular scenario. Because the variable will persist until the end of the block.

6, *dest++=*source++; equivalent to:

{

*dest=*source;

++dest;++source;

}

C + + Learning notes and thinking