public static member function
<string>
static int_type to_int_type (const char_type& c);
static constexpr int_type to_int_type (char_type c) noexcept;
To int type
Returns the int_type equivalent of c.
All character traits types shall implement the function so that the returned value can be transformed back to its char_type value using char_traits::to_char_type.
In the standard specializations of char_traits, this function performs the corresponding built-in integral promotion.
Parameters
c
Character value.
Member type char_type is the character type (i.e., the class template parameter in char_traits).
Return Value
The int_type equivalent of c.
Member type int_type is an integral type that can represent eof() or any valid character value.
Exception safety
No-throw guarantee: this member function never throws exceptions.