wchar_t pointer manipulation - How to check whether it is ended with L".xls"

I am using C. I have a wchar_t pointer whi开发者_JAVA技巧ch pointing a a file path.

I was wondering, how I can check, whether it is ended with L".xls"?

Any function call I can use?

• Check that the string is at least 4 long
• See if the last 4 wchar_t are ".xls"

Thus, this should be it:

if(wcslen(str) >= 4 && wcscmp(str + wcslen(str) - 4, L".xls") == 0)

Try wcsstr().