NAME¶

std::wcsstr - std::wcsstr

Synopsis¶

Defined in header <cwchar>
const wchar_t* wcsstr( const wchar_t* dest, const wchar_t* src );
wchar_t* wcsstr( wchar_t* dest, const wchar_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 <iostream>
#include <cwchar>
#include <clocale>

int main()
{
wchar_t const* origin = L"アルファ, ベータ, ガンマ, アルファ, ベータ, ガンマ.";
wchar_t const* target = L"ベータ";
wchar_t const* 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¶

find find characters in the string
(public member function of std::basic_string<CharT,Traits,Allocator>)
strstr finds the first occurrence of a substring of characters
(function)
wcschr finds the first occurrence of a wide character in a wide string
(function)
wcsrchr finds the last occurrence of a wide character in a wide string
(function)