p69.cpp

来自「《C++编程指南（续编）》的一些程序源代码」· C++ 代码 · 共 39 行

#include <fstream.h>

int main(int,char **)
{
	ifstream in("D:\\ifile.txt");
	if(in.fail())
	{
		cout<<"Error opening input file\n";
		return -1;
	}
	ofstream out("D:\\ofile.txt");
	if(out.fail())
	{
		cout<<"Error opening output file\n";
		return -1;
	}
	char buffer[80];
	for(;;)
	{
		in.getline(buffer,sizeof buffer);
		if(in.fail())
		{
			if(in.eof())
			{
				break;
			}
			cout<<"Error reading input file\n";
			return -1;
		}
		out<<buffer<<"\n";
		if(out.fail())
		{
			cout<<"Error writing output file\n";
			return -1;
		}
	}
	cout<<"Terminated normally\n";
	return 0;
}