#include <fstream>
#include <iostream>
 
int main()
{
   std::string inFile;
   std::string outFile;
 
   inFile = "coba.txt";
   outFile = inFile.insert(inFile.length()-4,"_baru");
 
   std::cout << "file input: " << inFile << std::endl;
   std::cout << "file output: " << outFile << std::endl;
 
   std::ifstream inBuff((inFile.c_str()), std::ios::binary);
   std::ofstream outBuff((outFile.c_str()), std::ios::binary);
   outBuff << inBuff.rdbuf();
 
   return 0;
}

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