The
is_pointer template of Boost library is used to check whether the given type is a pointer or not. It returns a boolean value showing the same.
Header Files:
#include "boost/type_traits.hpp"
or
#include "boost/type_traits/is_pointer.hpp"
Template Class:
template <class T>
struct is_pointer : public true_type-or-false_type {};
If T is a pointer type then inherits from true_type else inherits from false_type.
Syntax:
boost::is_pointer::value
boost::is_pointer::value_type
Parameter: This template accepts a single parameter
T(Trait class) to check whether T is a pointer type or not.
Accepted Arguments: This template accept the below arguments:
typename T
T *volatile
T *const volatile
T *const
T *
Return Value: This template returns a boolean value as shown below:
- True: If the type is a pointer value.
- False: If the type is a not pointer value.
Below programs illustrates the
std::is_pointer template in C++ STL:
Program 1:
Output:
is_pointer_type:
int *: 1
char *: 1
pointer to integer: 1
pointer to 1-D array: 1
1-D array :0
Program 2:
