C++/Console/cout boolalpha

Материал из C\C++ эксперт
Перейти к: навигация, поиск

boolapha: true and false values to be input and output

#include <iostream>
using namespace std;
int main()
{
  bool b;
  b = true;
  cout << b << " " << boolalpha << b << endl;
  cout << "Enter a Boolean value: ";
  cin >> boolalpha >> b;
  cout << "Here is what you entered:  " << b;
  return 0;
}


Demonstrate boolalpha format flag.

#include <iostream>
using namespace std;
int main()
{
  bool b;
  cout << "Before setting boolalpha flag: ";
  b = true;
  cout << b << " ";
  b = false;
  cout << b << endl;
  cout << "After setting boolalpha flag: ";
  b = true;
  cout << boolalpha << b << " ";
  b = false;
  cout << b << endl;
  cout << "Enter a Boolean value: ";
  cin >> boolalpha >> b; // you can enter true or false
  cout << "You entered " << b;
  return 0;
}