std::char_traits<char>::compare, std::char_traits<wchar_t>::compare, std::char_traits<char8_t>::compare, std::char_traits<char16_t>::compare, std::char_traits<char32_t>::compare

static int compare( const char_type* s1, const char_type* s2, std::size_t count );		(constexpr since C++17)

Compares the first count characters of the character strings s1 and s2. The comparison is done lexicographically.

If count is zero, strings are considered equal.

See CharTraits for the general requirements on character traits for X::compare.

s1, s2	-	pointers to character strings to compare
count	-	the number of characters to compare from each character string

Negative value if s1 is less than s2.

0 if s1 is equal to s2.

Positive value if s1 is greater than s2.

Linear in count.

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Diagnostics library
Memory management library
Metaprogramming library (C++11)
General utilities library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Technical specifications
Symbols index
External libraries