prog7.cpp

来自「C++语言程序设计题典」· C++ 代码 · 共 24 行

#include <iostream.h>
#include <fstream.h>
#include <iomanip.h>
void main()
{
	int n=1;
	fstream file1,file2;
	char fn1[10],fn2[10],buf[100];
	cout << "输入源文件名:";
	cin >> fn1;
	cout << "输入目标文件名:";
	cin >> fn2;
	file1.open(fn1,ios::in);
	file2.open(fn2,ios::out);
	while (!file1.eof())
	{
		file1.getline(buf,100);
		file2 << setw(3) << n++ << ": " ;
		file2 << buf << "\n";
	}
	file1.close();
	file2.close();
}