#include <iostream>
int main()
{
bool dTrue = false;
bool dFalse = false;
bool szTrue = false;
bool szFalse = false;
std::cin >> std::boolalpha;
std::cin >> dTrue;
std::cin >> dFalse;
std::cin >> szTrue;
std::cin >> szFalse;
std::cout << dTrue << " "; // 1
std::cout << dFalse << " "; // 0
std::cout << szTrue << " "; // 1
std::cout << szFalse << " "; // 0
std::cin >> std::noboolalpha;
std::cin >> dTrue;
std::cin >> dFalse;
std::cin >> szTrue;
std::cin >> szFalse;
std::cout << dTrue << " "; // 1
std::cout << dFalse << " "; // 0
std::cout << szTrue << " "; // 1
std::cout << szFalse << " "; // 0
std::cout << std::endl;
return 0;
}
// Input : true false true false 1 0 1 0
// Output: 1 0 1 0 1 0 1 0
Reference: Josuttis, Nicolai M., The C++ Standard Library: A Tutorial and Reference. New York: Addison-Wesley, 1999, p. 617.
Wednesday, December 27, 2017
C++98: The boolalpha and nobool alpha Manipulators on cin
The boolalpha manipulator changes the way Boolean values are input from cin. Here is an example:
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