Boolean literals

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Contents

[edit] Syntax

true (1)
false (2)

[edit] Explanation

The Boolean literals are the keywords true and false. They are prvalues of type bool.

[edit] Notes

See Integral conversions for implicit conversions from bool to other types and boolean conversions for the implicit conversions from other types to bool.

[edit] Example

#include <iostream>
 
int main()
{
  std::cout << std::boolalpha
            << true << '\n'
            << false << '\n'
            << std::noboolalpha
            << true << '\n'
            << false << '\n';
}

Output:

true
false
1
0