simcat v1.cpp

来自「一个用C++实现的模拟UNIX的cat的程序」· C++ 代码 · 共 36 行

#include <iostream>
#include <fstream>
#include <string.h>

using namespace std;

inline void read(istream& istrm);

int main(int argc, char* argv[])
{
   if (argc==1) read(cin);
   for(int i=1; i<argc; ++i)
   {
      if (strcmp(argv[i], "-")==0)
      {
         read(cin);
         continue;
      }
      ifstream in(argv[i]);
      if (!in)
      {
         cerr<<("%s", argv[0])<<": "<<("%s", argv[i])
             <<": No such a file or directory!"<<endl;
         continue;
      }
      read(in);
   }
   return 0;
}

inline void read(istream& istrm)
{
   char buf;
   while(istrm.get(buf)) cout.put(buf);
}