How to copy a file in C++

#include <fstream>#include <string>#include <stdio.h>#include <iostream>using namespace std;//CopyFile is a simple function that copies a file from arg1 to arg2int CopyFile(string initialFilePath, string outputFilePath){		ifstream initialFile(initialFilePath.c_str(), ios::in|ios::binary);	ofstream outputFile(outputFilePath.c_str(), ios::out|ios::binary);	//defines the size of the buffer	initialFile.seekg(0, ios::end);	long fileSize = initialFile.tellg();	//Requests the buffer of the predefined size	//As long as both the input and output files are open...	if(initialFile.is_open() && outputFile.is_open())	{		short * buffer = new short[fileSize/2];		//Determine the file's size		//Then starts from the beginning		initialFile.seekg(0, ios::beg);		//Then read enough of the file to fill the buffer		initialFile.read((char*)buffer, fileSize);		//And then write out all that was read		outputFile.write((char*)buffer, fileSize);		delete[] buffer;	}	//If there were any problems with the copying process, let the user know	else if(!outputFile.is_open())	{		cout<<"I couldn't open "<<outputFilePath<<" for copying!\n";		return 0;	}	else if(!initialFile.is_open())	{		cout<<"I couldn't open "<<initialFilePath<<" for copying!\n";		return 0;	}			initialFile.close();	outputFile.close();	return 1;}

#include <stdio.h>#include <stdlib.h>int main(int argc,char *argv[]){  int c;  FILE *in,*out;  if(argc != 3)  {     printf("Usage: copy <source> <dest>\n");  }  else   {     in = fopen( argv[1], "r" );     out = fopen( argv[2], "w" );     if(in==NULL || !in)     {	fprintf(stderr,"%s: No such file or directory\n",argv[1]);	return 0;     }     else if(out==NULL || !out)     {	fprintf(stderr,"%s: No such file or directory\n",argv[2]);	return 0;     }     while((c=getc(in))!=EOF)       putc(c,out);      fclose(in);      fclose(out);  }  return 0;}