unordered_multimap cend() function in C++ STL (original) (raw)

Last Updated : 8 Aug, 2018

The unordered_multimap::cend() is a built-in function in C++ STL which returns a constant iterator pointing to the position after the last element in the container or to the position after the last element in one of its bucket. Syntax:

unorderedmultimapname.cend(n)

Parameters: The function accepts one parameter. If a parameter is passed, it returns a constant iterator pointing to the position after the last element in one of its bucket. If no parameter is passed, then it returns a constant iterator pointing to the position after the last element in the unordered_multimap container. Return Value: It returns a constant iterator. It cannot be used to modify the key and element of the unordered_multimap element. Below programs illustrates the above function: Program 1:

CPP `

// C++ program to illustrate the // unordered_multimap::cend() #include <bits/stdc++.h> using namespace std;

int main() {

// declaration
unordered_multimap<int, int> sample;

// inserts key and element
sample.insert({ 1, 2 });
sample.insert({ 3, 4 });
sample.insert({ 3, 4 });
sample.insert({ 2, 3 });
sample.insert({ 2, 3 });

// prints all element
cout << "Key and Elements:";
for (auto it = sample.cbegin(); it != sample.cend(); it++)
    cout << "\n   " << it->first << "\t      " 
         << it->second;

return 0;

}

`

Output:

Key and Elements: 2 3 2 3 1 2 3 4 3 4

Program 2:

CPP `

// C++ program to illustrate the // unordered_multimap::cend(bucket) #include <bits/stdc++.h> using namespace std;

int main() {

// declaration
unordered_multimap<int, int> sample;

// inserts key and element
sample.insert({ 1, 2 });
sample.insert({ 3, 4 });
sample.insert({ 3, 4 });
sample.insert({ 2, 3 });
sample.insert({ 2, 3 });

// prints all element
cout << "Key and Elements of first bucket:";
for (auto it = sample.cbegin(1); it != sample.cend(1); it++)
    cout << "\n   " << it->first << "\t      " 
         << it->second;

return 0;

}

`

Output:

Key and Elements of first bucket: 1 2