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// bad_function_call example
#include <iostream> // std::cout
#include <functional> // std::function, std::plus, std::bad_function_call
int main () {
std::function<int(int,int)> foo = std::plus<int>();
std::function<int(int,int)> bar;
try {
std::cout << foo(10,20) << '\n';
std::cout << bar(10,20) << '\n';
}
catch (std::bad_function_call& e)
{
std::cout << "ERROR: Bad function call\n";
}
return 0;
}
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