Thread: finding the extension of a file

I need to the find the extension of a file if i have the full filename in a sting.


To be more specific, if i have a filename such as file.exe, i need to know if it ends in .cpp


the only thing i can think of is to trim the string leaving on the last 4 characters, but i dont think thats possible in c++.


Any ideas?

If using character arrays, try this:

Code:

#include <cstring>

using namespace std;
int main(void)
{
   char extension[5] = "";
   char *filename = "dictionary.cpp";

   strncpy(extension,filename+strlen(filename)-4,4);
   cout << "extension:" << extension << endl;
   return 0;
}