prog2.cpp

来自「C++语言程序设计题典」· C++ 代码 · 共 22 行

#include <iostream.h>
#include <fstream.h>
void main()
{
	char  fn[20];
	cout << "文件名:";
	cin >> fn;
	ifstream file(fn,ios::nocreate|ios::in);
	try
	{
		if (file.fail())
			throw "error";
	}
	catch(char *s)
	{
		cout << "不存在文件" << fn << endl;
		return;
	};
	file.seekg(0,ios::end);
	cout << fn << "文件大小:" << file.tellg() << " Bytes" << endl;
}