#include <iostream>
#include <fstream>

#define MAX_BUF 100

using namespace std;

void copyfile(const char *file1, const char *file2) {
	FILE* f1 = fopen(file1, "rb");
	FILE* f2 = fopen(file1, "wb");

	if (f1 == NULL || f2 == NULL)
		return;
	
	char buf[MAX_BUF];
	int count;
	do {
		count=fread(buf,1,MAX_BUF,f1);
		fwrite(buf, 1, MAX_BUF, f2);
	} while (count == MAX_BUF);

	fclose(f1);
	fclose(f2);
}

int main() {
	copyfile("C:\\Users\\pc\\Desktop\\in.txt","C:\\Users\\pc\\Desktop\\out.txt");
	cout << "Succesfully" << endl;
	return 0;
}