=====front=====
Syntax:

<code>
    #include <vector>
    TYPE& front();
    const TYPE& front() const;
</code>

The front() function returns a reference to the first element of the vector,
and runs in [[/complexity|constant time]].

For example, the following code uses a vector and the sort()_algorithm to
display the first word (in alphabetical order) entered by a user:

<code>
    vector<string> words;
    string str;

    while( cin >> str ) words.push_back(str);

    sort( words.begin(), words.end() );

    cout << "In alphabetical order, the first word is '" << words.front() << "'." << endl;
</code>

When provided with this input:

<code terminal>
    now is the time for all good men to come to the aid of their country
</code>

...the above code displays:

<code terminal>
    In alphabetical order, the first word is 'aid'.
</code>

Related Topics: [[back]]