#include <iostream>
#include <functional>
int main() {
// A lambda expression that takes two integers (a, b)
// and returns the remainder of a divided by b.
// The type is deduced automatically using 'auto'.
auto mod1 = [](int a, int b) { return a % b; };
// Call the lambda and print the result
std::cout << "mod1(12, 5) = " << mod1(12, 5) << "\n";
// std::function explicitly stores a callable object
// with the signature: int(int, int)
// Here we assign another lambda that performs modulus.
std::function<int(int, int)> mod2 = [](int a, int b) { return a % b; };
// Call the std::function-wrapped lambda and print the result
std::cout << "mod2(17, 3) = " << mod2(19, 4) << "\n";
}
/*
run:
mod1(12, 5) = 2
mod2(17, 3) = 3
*/
