set rend() in C++

rend(): This is a build-in function in STL. This function returns a read-only 

(constant) reverse iterator that points to the last pair in the set.

Note: Iteration is done in descending order according to the keys. 

This function is available in the below file.

File: stl_set.h

Parameters: No parameters are required for this function.

Syntax:

set<data_type>::const_reverse_iterator it = st.rend()

For Example:

st = {1,2,3,4}

st.rend() = > It returns an iterator that points to last element (i.e 4)

Approach

C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    set<int> st;
    st.insert({1, 4, 3, 2});

    set<int>::const_reverse_iterator it = st.rend();

    cout << *it << "\n";

    return 0;
}