From cppreference.com
Defined in header
constwchar_t*wcsstr(constwchar_t*dest,constwchar_t*src);wchar_t*wcsstr(wchar_t*dest,constwchar_t*src);Finds the first occurrence of the wide string src in the wide string pointed to by dest. The terminating null characters are not compared.
Parameters
dest - pointer to the null-terminated wide string to examine src - pointer to the null-terminated wide string to search for Return value
Pointer to the first character of the found substring in dest, or a null pointer if no such substring is found. If src points to an empty string, dest is returned.
Example
Run this code
#include<clocale>#include<cwchar>#include<iostream>intmain(){wchar_tconst*origin=L"アルファ, ベータ, ガンマ, アルファ, ベータ, ガンマ.";wchar_tconst*target=L"ベータ";wchar_tconst*result=origin;std::setlocale(LC_ALL,"en_US.utf8");std::wcout<<L"Substring to find: \""<<target<<L"\"\n"<<L"String to search: \""<<origin<<L"\"\n\n";for(;(result=std::wcsstr(result,target))!=nullptr;++result)std::wcout<<L"Found: \""<<result<<L"\"\n";}Possible output:
Substring to find: "ベータ" String to search: "アルファ, ベータ, ガンマ, アルファ, ベータ, ガンマ." Found: "ベータ, ガンマ, アルファ, ベータ, ガンマ." Found: "ベータ, ガンマ." See also
finds the first occurrence of the given substring
(public member function of std::basic_string<CharT,Traits,Allocator>)
finds the first occurrence of a substring of characters
(function)
finds the first occurrence of a wide character in a wide string
(function)
finds the last occurrence of a wide character in a wide string
(function)