# std::wcsstr

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< cpp‎ | string‎ | wide

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 <clocale>
    #include <cwchar>
    #include <iostream>

    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 | finds the first occurrence of the given substring (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)

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