Inserting pair in map

Question

For a map,

map<int,pair<int,int>>m;

The below line worked

m[level]=pair<int,int>(h,root->data);       //root is a pointer to a node in tree

But the below didn't

m.insert(pair<int,pair<int,int>>(level,(h,root->data)));

Why?

Does it not compile or does it not work? – pesuww Oct 03 '20 at 12:04 — pesuww, Oct 03 '20 at 12:04
@pesuww It doesn't even compile. – Cheri Joseph Oct 03 '20 at 12:40 — Cheri Joseph, Oct 03 '20 at 12:40

score 0 · Answer 1 · answered Oct 03 '20 at 12:47

I suggest adding C++ tag to the thread. Use std::make_pair for making pairs. And it's not really recommended to use using namespace std; Why is “using namespace std;” considered bad practice?

m.insert(std::make_pair(level, std::make_pair(h, root->data)))

1 Answers1