int main(){
std::unordered_multiset<Sales_data> SDset;
SDset.insert(Sales_data());
SDset.insert(Sales_data("ss"));
SDset.insert(Sales_data("ss",3,2.5));
for(auto p = SDset.begin();p != SDset.end();++p)
std::cout << *p << " ";
std::cout << std::endl;
return 0;
}
int main()
{
Sales_data data1 = Sales_data();
Sales_data data2 = Sales_data("7-5327-1710-0");
Sales_data data3 = Sales_data("7-5327-1710-0", 1, 5);
Sales_data data4 = Sales_data(std::cin);
print(std::cout, data1);
print(std::cout, data2);
print(std::cout, data3);
print(std::cout, data4);
}
void Ex7_11() // use Sales_data constructors
{
std::cout << "Exercise 7.11:" << std::endl;
std::vector<Sales_data> sd;
sd.push_back(Sales_data());
sd.push_back(Sales_data("isbn1"));
sd.push_back(Sales_data("isbn2", 5, 2.5));
std::cout << "enter a transaction: ";
sd.push_back(Sales_data(std::cin));
std::cout << "the transactions are:" << std::endl;
//for (auto &trans : sd)
for (unsigned i = 0; i != sd.size(); ++i)
print(std::cout, sd[i]) << std::endl;
}
int main() {
std::vector<Sales_data> vs;
vs.push_back(Sales_data("11111", 1, 15));
vs.push_back(Sales_data("11111", 2, 15));
vs.push_back(Sales_data("11111", 10, 11));
vs.push_back(Sales_data("11111", 10, 1));
vs.push_back(Sales_data("11111", 11, 15));
auto fcn = std::mem_fn(&Sales_data::avg_price);
auto it = std::find_first_of(vs.cbegin(), vs.cend(), fcn > 100);
if (it != vs.cend()) {
std::cout << *it << std::endl;
}
return 0;
}
// for ex17.4
// print the result using the given iostream
void reportResults(std::istream& in, std::ostream os,
const std::vector<std::vector<Sales_data>>& files)
{
std::string s;
while(in >> s)
{
auto trans = findBook(files, s);
if(trans.empty()){
std::cout << s << "not found in any stores" << std::endl;
continue;
}
for(const auto& store :trans)
os << "store " << std::get<0>(store) << " sales: "
<< std::accumulate(std::get<1>(store), std::get<2>(store),
Sales_data(s))
<< std::endl;
}
}
