ostring.cpp

Think in C++ 第二版源码

//: C18:Ostring.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Output strstreams
#include <iostream>
#include <strstream>
using namespace std;

int main() {
  const int sz = 100;
  cout << "type an int, a float and a string:";
  int i;
  float f;
  cin >> i >> f;
  cin >> ws; // Throw away white space
  char buf[sz];
  cin.getline(buf, sz); // Get rest of the line
  // (cin.rdbuf() would be awkward)
  ostrstream os(buf, sz, ios::app);
  os << endl;
  os << "integer = " << i << endl;
  os << "float = " << f << endl;
  os << ends;
  cout << buf;
  cout << os.rdbuf(); // Same effect
  cout << os.rdbuf(); // NOT the same effect
} ///:~