c-resources/CPlusPlus20ForProgrammers-m.../examples/ch19/fig19_17.cpp

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2024-04-09 06:45:18 +00:00
// fig19_17.cpp
// Stream manipulators boolalpha and noboolalpha.
#include <iostream>
int main() {
bool booleanValue{true};
// display default true booleanValue
std::cout << "booleanValue is " << booleanValue;
// display booleanValue after using boolalpha
std::cout << "\nbooleanValue (after using boolalpha) is "
<< std::boolalpha << booleanValue;
std::cout << "\n\nswitch booleanValue and use noboolalpha\n";
booleanValue = false; // change booleanValue
std::cout << std::noboolalpha; // use noboolalpha
// display default false booleanValue after using noboolalpha
std::cout << "\nbooleanValue is " << booleanValue;
// display booleanValue after using boolalpha again
std::cout << "\nbooleanValue (after using boolalpha) is "
<< std::boolalpha << booleanValue << "\n";
}
/**************************************************************************
* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* *
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**************************************************************************/