Did not understand the particular question

#1

how can we assign a set to a pair

#2

question no 13 is my doubt

#3

Hi @sagnik.guru4

stl set iterator returned by insert

What will be the output of following C++ code?

#include <bits/stdc++.h>
using namespace std;
int main()
{
    set<int>s;
    pair<set<int>::iterator, bool> ret;
    s.insert(1);
    s.insert(5);
    s.insert(10);
    s.insert(3);
    ret = s.insert(10);
    cout<<ret.second<<endl;
    return 0;
}
Choices
  • 0
  • Compilation Error
  • Runtime Error
  • 1

I did not understand your doubt.

Why can we not? pair is a template datatype and it can accept any kind of data structure. Just like you can make a vector of vectors, a set of pairs, a queue of class objects, etc

#4

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