Compares two null-terminated wide strings lexicographically.

The sign of the result is the sign of the difference between the values of the first pair of wide characters that differ in the strings being compared.

The behavior is undefined iflhs orrhs are not pointers to null-terminated wide strings.

[edit]Parameters

[edit]Return value

Negative value iflhs appears beforerhs in lexicographical order.

Zero iflhs andrhs compare equal.

Positive value iflhs appears afterrhs in lexicographical order.

[edit]Notes

This function is not locale-sensitive, unlikestd::wcscoll, and the order may not be meaningful when characters from different Unicode blocks are used together or when the order of code units does not match collation order.

[edit]Example

#include <algorithm>#include <cwchar>#include <iostream>#include <locale>#include <vector> int main(){std::vector<constwchar_t*> leaders{        L"Ленин", L"Сталин", L"Маленков", L"Хрущёв",        L"Брежнев", L"Андропов", L"Черненко", L"Горбачёв"};     std::ranges::sort(leaders,[](auto leaderLHS,auto leaderRHS){return std::wcscmp(leaderLHS, leaderRHS)<0;}); std::setlocale(LC_ALL,"en_US.utf8");std::wcout.imbue(std::locale("en_US.utf8"));for(auto leader: leaders)std::wcout<< leader[0]<<' ';std::wcout<<'\n';}

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[edit]See also

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