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#include <iostream>
#include <string>
#include <map>
using namespace std;
int main()
{
pair<string, int> pa[] =
{
pair<string,int>("one", 10),
pair<string,int>("two", 20),
pair<string,int>("three", 30),
};
map<string, int> object(&pa[0], &pa[3]);
// {four, 40} and `true' is returned
pair<map<string, int>::iterator, bool>
ret = object.insert
(
map<string, int>::value_type
("four", 40)
);
cout << boolalpha;
cout << ret.first->first << " " <<
ret.first->second << " " <<
ret.second << " " << object["four"] << '\n';
// {four, 40} and `false' is returned
ret = object.insert
(
map<string, int>::value_type
("four", 0)
);
cout << ret.first->first << " " <<
ret.first->second << " " <<
ret.second << " " << object["four"] << '\n';
}
/*
Generated output:
four 40 true 40
four 40 false 40
*/
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