Extracting a File Extension from a String - C++ File Stream

C++ examples for File Stream:File Operation

  1. HOME
  2. C++
  3. File Stream
  4. File Operation

Description

Extracting a File Extension from a String

Demo Code

#include <iostream>
#include <string>

using std::string;

string getFileExt(const string& s) {
   size_t i = s.rfind('.', s.length());
   if (i != string::npos) {
      return(s.substr(i+1, s.length() - i));
   }/*w w w. j av a2 s .c om*/

   return("");
}

int main(int argc, char** argv) {

   string path = argv[1];

   std::cout << "The extension is \"" << getFileExt(path) << "\"\n";
}

Related Tutorials