multimap rbegin in C++ STL

Last Updated : 18 Oct, 2018

multimap::rbegin() is a built-in-function in C++ STL which returns an iterator pointing to the last element of the container.
Syntax:

multimap_name.rbegiin()

Parameters: The function does not take any parameter.
Return Value: The function returns a reverse iterator pointing to the last element of the container.
(Note: Reverse iterators iterate backwards i.e when they are increased they move towards the beginning of the container)

The following two programs illustrates the function.

Program 1

// CPP program to illustrate 
// multimap::rbegin() 
  
#include <iostream> 
#include <map> 
using namespace std; 
  
int main() 
{ 
    multimap<char, int> sample; 
  
    // Insert pairs in the multimap 
    sample.insert(make_pair('a', 10)); 
    sample.insert(make_pair('b', 20)); 
    sample.insert(make_pair('b', 30)); 
    sample.insert(make_pair('c', 40)); 
    sample.insert(make_pair('c', 50)); 
  
    // Get the last element by 
    // multimap::rbegin() 
    cout << sample.rbegin()->first << " = " << sample.rbegin()->second; 
} 

Output

c = 50

Program 2

// CPP program to illustrate 
// multimap::rbegin() 
  
#include <iostream> 
#include <map> 
using namespace std; 
  
int main() 
{ 
    multimap<char, int> sample; 
  
    // Insert pairs in the multimap 
    sample.insert(make_pair('a', 10)); 
    sample.insert(make_pair('b', 20)); 
    sample.insert(make_pair('b', 30)); 
    sample.insert(make_pair('c', 40)); 
    sample.insert(make_pair('c', 50)); 
  
    // Show content of the multimap 
    for (auto it = sample.rbegin(); it != sample.rend(); it++) 
        cout << it->first << " = " << it->second << endl; 
} 

Output

c = 50
c = 40
b = 30
b = 20
a = 10

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