compare2.cpp

来自「This is the second part of that lab manu」· C++ 代码 · 共 30 行

//: C04:Compare2.cpp
// From "Thinking in C++, 2nd Edition, Volume 2"
// by Bruce Eckel & Chuck Allison, (c) 2001 MindView, Inc.
// Available at www.BruceEckel.com.
// Overloaded compare()
//{L} ../TestSuite/Test
//{-g++295}
#include <string>
#include <iostream>
using namespace std;

int main() {
  string first("This");
  string second("That");
  // Compare first two characters of each string:
  switch(first.compare(0, 2, second, 0, 2)) {
    case 0: // The same
      cout << first << " and " << second <<
        " are lexically equal" << endl;
      break;
    case -1: // Less than
      first.swap(second);
      // Fall through this case...
    case 1: // Greater than
      cout << first <<
        " is lexically greater than " <<
        second << endl;
  }
} ///:~