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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.
c
Character value.
Member type char_type is the character type (i.e., the class template parameter in char_traits).
Member type int_type is an integral type that can represent eof() or any valid character value.
Reference
C library:
- <cassert> (assert.h)
- <cctype> (ctype.h)
- <cerrno> (errno.h)
-
<cfenv> (fenv.h)C++11
- <cfloat> (float.h)
-
<cinttypes> (inttypes.h)C++11
- <ciso646> (iso646.h)
- <climits> (limits.h)
- <clocale> (locale.h)
- <cmath> (math.h)
- <csetjmp> (setjmp.h)
- <csignal> (signal.h)
- <cstdarg> (stdarg.h)
-
<cstdbool> (stdbool.h)C++11
- <cstddef> (stddef.h)
-
<cstdint> (stdint.h)C++11
- <cstdio> (stdio.h)
- <cstdlib> (stdlib.h)
- <cstring> (string.h)
-
<ctgmath> (tgmath.h)C++11
- <ctime> (time.h)
-
<cuchar> (uchar.h)C++11
- <cwchar> (wchar.h)
- <cwctype> (wctype.h)
Containers:
-
<array>C++11
- <deque>
-
<forward_list>C++11
- <list>
- <map>
- <queue>
- <set>
- <stack>
-
<unordered_map>C++11
-
<unordered_set>C++11
- <vector>
-
Input/Output:
Multi-threading:
-
<atomic>C++11
-
<condition_variable>C++11
-
<future>C++11
-
<mutex>C++11
-
<thread>C++11
-
Other:
- <algorithm>
- <bitset>
-
<chrono>C++11
-
<codecvt>C++11
- <complex>
- <exception>
- <functional>
-
<initializer_list>C++11
- <iterator>
- <limits>
- <locale>
- <memory>
- <new>
- <numeric>
-
<random>C++11
-
<ratio>C++11
-
<regex>C++11
- <stdexcept>
- <string>
-
<system_error>C++11
-
<tuple>C++11
-
<type_traits>C++11
-
<typeindex>C++11
- <typeinfo>
- <utility>
- <valarray>
- Reference
- <string>
- char_traits
- to_int_type
public static member function
<string>
std::char_traits::to_int_type
static int_type to_int_type (const char_type& c);
static constexpr int_type to_int_type (char_type c) noexcept;
To int type
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
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.
Complexity
Constant.Exception safety
No-throw guarantee: this member function never throws exceptions.See also
- char_traits::to_char_type
- To char type (public static member function)
- char_traits::eq_int_type
- Compare int_type values (public static member function)
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Spotted an error? contact us