How can I display the content of a map on the console?

前端未结

关注

 7  1519

轻奢々 2020-12-28 13:41

I have a map declared as follows:

map < string , list < string > > mapex ; list< string > li;

How can I disp

7条回答

长情又很酷 (楼主)

2020-12-28 14:08

Another form, using :

void printPair(const pair > &p)
{
    cout << "Key: " << p.first << endl;
    copy(p.second.begin(), p.second.end(), ostream_iterator(cout, "\n"));
}    
for_each(mapex.begin(), mapex.end(), printPair);

Test program:

#include 
#include 
#include 
#include 
#include 
using namespace std;

void printPair(const pair > &p)
{
    cout << "Key: " << p.first << endl;
    copy(p.second.begin(), p.second.end(), ostream_iterator(cout, "\n"));
}

int main()
{
    map >  mapex;

    list mylist1;
    mylist1.push_back("item 1");
    mylist1.push_back("item 2");
    mapex["foo"] =  mylist1;
    list mylist2;
    mylist2.push_back("item 3");
    mylist2.push_back("item 4");
    mylist2.push_back("item 5");
    mapex["bar"] =  mylist2;

    for_each(mapex.begin(), mapex.end(), printPair);
}

0 讨论(0)

查看其它7个回答