57 lines
2.7 KiB
C++
57 lines
2.7 KiB
C++
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// fig15_06.cpp
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// Using type traits to test whether types are
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// integral types, floating-point types or arithmetic types.
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#include <fmt/format.h>
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#include <iostream>
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#include <string>
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#include <type_traits>
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int main() {
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std::cout << fmt::format("{}\n{}{}\n{}{}\n{}{}\n{}{}\n{}{}\n\n",
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"CHECK WITH TYPE TRAITS WHETHER TYPES ARE INTEGRAL",
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"std::is_integral<int>::value: ", std::is_integral<int>::value,
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"std::is_integral_v<int>: ", std::is_integral_v<int>,
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"std::is_integral_v<long>: ", std::is_integral_v<long>,
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"std::is_integral_v<float>: ", std::is_integral_v<float>,
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"std::is_integral_v<std::string>: ",
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std::is_integral_v<std::string>);
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std::cout << fmt::format("{}\n{}{}\n{}{}\n{}{}\n{}{}\n{}{}\n\n",
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"CHECK WITH TYPE TRAITS WHETHER TYPES ARE FLOATING POINT",
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"std::is_floating_point<float>::value: ",
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std::is_floating_point<float>::value,
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"std::is_floating_point_v<float>: ",
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std::is_floating_point_v<float>,
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"std::is_floating_point_v<double>: ",
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std::is_floating_point_v<double>,
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"std::is_floating_point_v<int>: ",
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std::is_floating_point_v<int>,
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"std::is_floating_point_v<std::string>: ",
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std::is_floating_point_v<std::string>);
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std::cout << fmt::format("{}\n{}{}\n{}{}\n{}{}\n{}{}\n",
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"CHECK WITH TYPE TRAITS WHETHER TYPES CAN BE USED IN ARITHMETIC",
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"std::is_arithmetic<int>::value: ", std::is_arithmetic<int>::value,
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"std::is_arithmetic_v<int>: ", std::is_arithmetic_v<int>,
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"std::is_arithmetic_v<double>: ", std::is_arithmetic_v<double>,
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"std::is_arithmetic_v<std::string>: ",
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std::is_arithmetic_v<std::string>);
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}
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/**************************************************************************
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* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The authors *
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* and publisher shall not be liable in any event for incidental or *
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* consequential damages in connection with, or arising out of, the *
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* furnishing, performance, or use of these programs. *
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**************************************************************************/
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