c-resources/CPlusPlus20ForProgrammers-m.../examples/ch15/fig15_05.cpp

35 lines
1.5 KiB
C++

// fig15_05.cpp
// Constrained multiply function template that allows
// only integers and floating-point values.
#include <concepts>
#include <iostream>
template<typename T>
requires std::integral<T> || std::floating_point<T>
T multiply(T first, T second) {return first * second;}
int main() {
std::cout << "Product of 5 and 3: " << multiply(5, 3)
<< "\nProduct of 7.25 and 2.0: " << multiply(7.25, 2.0) << "\n";
std::string s1{"hi"};
std::string s2{"bye"};
auto result{multiply(s1, s2)};
}
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