main.cpp

this a good book.

#include<iostream>
#include<fstream>
#include<cmath>
using namespace std;

void WriteFile(int c)
{
	ofstream out1;
	out1.open("out.txt",ios_base::binary|ios_base::app);

	out1<<c<<' ';
	
    out1.close();
}


void f(int x)
{

}

void ClearFile()
{
	ofstream out1;
	out1.open("out.txt");
    out1.close();
}

int main()
{
	ClearFile();
	f(352456);
	return 0;
}