36 lines
1.6 KiB
C++
36 lines
1.6 KiB
C++
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// fig15_07.cpp
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// Constrained multiply abbreviated function template.
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#include <concepts>
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#include <iostream>
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// Numeric concept aggregates std::integral and std::floating_point
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template<typename T>
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concept Numeric = std::integral<T> || std::floating_point<T>;
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// abbreviated function template with constrained auto
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auto multiply(Numeric auto first, Numeric auto second) {
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return first * second;
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}
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int main() {
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std::cout << "Product of 5 and 3: " << multiply(5, 3)
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<< "\nProduct of 7.25 and 2.0: " << multiply(7.25, 2.0)
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<< "\nProduct of 5 and 7.25: " << multiply(5, 7.25) << "\n";
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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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