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std::char_traits::length(3) C++ Standard Libary std::char_traits::length(3) NAME std::char_traits::length - std::char_traits::length Synopsis static std::size_t length( const char_type* s ); (until C++17) static constexpr std::size_t length( const char_type* s ); (since C++17) Returns the length of the character sequence pointed to by s, that is, the position of the terminating null character (CharT()). Parameters s - pointer to a character sequence to return length of Return value The length of character sequence pointed to by s. Exceptions Throws nothing. Complexity Linear. Example // Run this code #include <iostream> #include <iomanip> #include <string> void print(const char* str) { std::cout << std::quoted(str) << " has length = " << std::char_traits<char>::length(str) << '\n'; } int main() { print("foo"); std::string s{"booo"}; print(s.c_str()); } Output: "foo" has length = 3 "booo" has length = 4 http://cppreference.com 2022.07.31 std::char_traits::length(3)
NAME | Synopsis | Parameters | Return value | Exceptions | Complexity | Example | Output:
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