第15周 程序阅读五

#include <iterator>#include <algorithm>#include <functional>#include <iostream>#include <vector>using namespace std;class Angle{    int degrees;public:    Angle(int deg) : degrees(deg) {}    int mul(int times)    {        return degrees *= times;    }};int main(){    int x[] = {1, 2, 4, 5, 8};    vector<Angle> va;    for(int i =10; i <= 50; i += 10)        va.push_back(Angle(i));    transform(va.begin(), va.end(), x, ostream_iterator<int>(cout , "  "), mem_fun_ref(&Angle::mul));    cout << endl;    return 0;}