fig21_01.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 32 行

// Fig. 21.1: fig21_01.cpp
// Demonstrating data type bool.
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
   bool boolean = false;
   int x = 0;

   cout << "boolean is " << boolean
        << "\nEnter an integer: ";
   cin >> x;

   cout << "integer " << x << " is"
        << ( x ? " nonzero " : " zero " )
        << "and interpreted as ";

   if ( x )
      cout << "true\n";
   else
      cout << "false\n";

   boolean = true;
   cout << "boolean is " << boolean;
   cout << "\nboolean output with boolalpha manipulator is " 
        << boolalpha << boolean << endl;

   return 0;
}