Why this is not working

#1


and if we use
for(auto p:s)
{
cout<<p.first<<“and”<<p.second<<endl;
}
works good

#2

Hey @guptanikhil898
Here

auto it=s.lower_bound(make_pair(20,1)); //it is an iterator
cout<<(*it).first<<","<<(*it).second<<endl; //to access iterator either dereference and use
cout<first<<","<second<<endl; //or like this (similar to what we do with pointers)

and here

for(auto p:s) //every p is a pair type
{
cout<<p.first<<“and”<<p.second<<endl;
}

#3

for(set<pair<int,int>>::iterator it=s.begin();it!=s.end();it++)

{
    cout<<*(it).first<<"and"<<*(it).second<<endl;
}

why this is showing error

#4

This should be (*it).first

and this (*it).second

#5

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