WB2.8 Словари 1

RobertDeMilo

Sep 3rd, 2023

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#include <iostream>
#include <map>
using namespace std;
void PrintMap(const map <int, string>& m)
{
cout << "Size = " << m.size() << endl;
for (auto item : m)
{
cout << item.first << ": " << item.second << endl;
}
}
void PrintReversedMap(const map <string, int>& m)
{
cout << "Size = " << m.size() << endl;
for (auto item : m)
{
cout << item.first << ": " << item.second << endl;
}
}
map<string, int> BuildReversedMap(const map<int, string>& m)
{
map<string, int> result;
for (auto item : m)
{
result[item.second] = item.first;
}
return result;
}
int main()
{
map<int, string> events;
events[1950] = "Bjarne Stroustrup's birth";
events[1941] = "Dennis Ritchie's birth";
events[1970] = "UNIX epoch start";
PrintMap(events);
cout << events[1950] << endl;
events.erase(1970); // принимает ключ, который хотим удалить вместе с его значением
PrintMap(events);
//PrintReversedMap(BuildReversedMap(events));
map<string, int> event_for_year = BuildReversedMap(events);
cout << event_for_year["Bjarne Stroustrup's birth"];
return 0;
}

Tags: erase

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