C++ examples for STL:Lambda
Recursive calls in a lambda expression
#include <iostream> #include <functional> // For function<> int main()/*from www . ja v a 2s. co m*/ { std::function<long long(long long, long long)> hcf = [&hcf](long long i, long long j) mutable ->long long { if (i < j) return hcf(j, i); long long remainder{i%j}; if (!remainder) return j; return hcf(j, remainder); }; auto showHCF = [&hcf](long long a, long long b) { std::cout << "The highest common factor of " << a << " and " << b << " is " << hcf(a, b) << std::endl; }; long long a {}, b {}; while (true) { std::cout << "\nEnter two integers to find their HCF, or 0 to end: "; std::cin >> a; if (!a) break; std::cin >> b; showHCF(a, b); } }