please write code in C++

Write a function called is_sorted that matches the following declaration: bool is_sorted(const std::vector& v, int& num_compares) The function should return true if the elements of the vector v are sorted in ascending order and false otherwise. Use std::is_sorted with a lambda expression in order to determine if the elements are sorted. Upon return, the parameter num_compares should be set to the number of comparisons required by std::is_sorted (i.e., the number of times that the function-call operator is invoked for the comparison functor).