while.cc

来自「资深C++讲师授课代码」· CC 代码 · 共 23 行

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

int main()
{
	char filename[100];
	cout << "input filename:";
	cin >> filename;
	ifstream fin;
	fin.open(filename);
	if(!fin.is_open()){
		cout << "cannot open " << filename << endl;
		return -1;
	}
	char ch;
	while(fin>>ch){
		cout << ch;
	}
	fin.close();
}