Is there a reverse function for strstr

Question

I am trying to find a similar function to strstr that searches a substring starting from the end towards the beginning of the string.

Answer 1

If you can use C++, you can search strings like this:

std::string::iterator found=std::search(haystack.rbegin(), haystack.rend(), needle.rbegin(), needle.rend()).base();
// => yields haystack.begin() if not found, otherwise, an iterator past-the end of the occurence of needle