Search notes:

C++ Standard Library: std::boolalpha

//
// g++ boolalpha.cpp
//
#include <iostream>

int main() {

  std::cout << true  << std::endl; //  1
  std::cout << false << std::endl; //  0

  std::cout << std::boolalpha;

  std::cout << true  << std::endl; // true
  std::cout << false << std::endl; // false

}
Github repository about-cpp-standard-library, path: /iostream/boolalpha.cpp
Output:
1
0
true
false

See also

C++ Standard Library

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