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What is deque back( ) in C++?
The deque back( ) function is used to reference last element of deque.
Syntax
dequename.back( )
Example
Input Deque − 11 12 13 14 15
Output New Deque − 15
Input Deque − C H O I C E
Output New Deque − E
Approach can be followed
First we declare the deque
Then we print the deque.
Then we define the back( ) function.
By using above approach we can fetch the last element of the deque.
Example
// C++ code to demonstrate the working of deque back( ) function
#include<iostream.h>
#include<deque.h>
Using namespace std;
int main( ){
// initializing deque
deque<int> deque ={ 14, 15, 16, 17, 18 };
cout<< “ Deque: “;
for( auto x = deque.begin( ); x != deque.end( ); ++x)
cout<< *x << “ “;
// defining the back( ) function
cout<< deque.back( );
return 0;
}Output
If we run the above code then it will generate the following output
Input: 14 15 16 17 18 Output: 18 Input: S A L T Output: T
Updated on: 26-Feb-2020
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