Numeric: This is a fundamental type provided by C++ language.
Integers, Floating point types come under this......................
Typecasting: C++ is very strict about type compatibility. Different
variable types must be cast when their values are assigned to each other. Type
cast operator is used for explicit type conversion of
variables.......................
:: Operator: ‘::’ is known as Scope Resolution Operator. C++ is a block
structured language. Different program modules are written in various blocks.
Same variable name can be used in different blocks......................
The qualifier const can be applied to the declaration of any variable to
indicate that its value will not be changed. Once a variable is declared with
const qualifier, it no longer remains a variable (i.e. its value can not be
changed). A const must be initialized with some value.........................
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