C++ Vector data() function

C++ Vector data() function tutorial for beginners and professionals with examples on assign(), at(), back(), begin(), capacity(), cbegin(), cend(), clear(), crbegin(), crend(), data(), emplace(), end(), front(), rbegin(), resize(), size(), swap() etc.

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C++ Vector data()

This function returns a pointer to an array internally used by a vector to store its elements.

Syntax

Consider a vector 'v' and pointer 'p'. Syntax would be:

data_type *p=v.data();

Parameter

It does not contain any parameter.

Return value

It returns a pointer to an array.

Example 1

Let's see a simple example.

#include 
#include
using namespace std;
int main()
{
vector v{10,20,30,40,50};
int *k=v.data();
for(int i=0;i

Output:

10 20 30 40 50

In this example, k is the pointer of integer type referring to the elements of a vector.

Example 2

Let's see a simple another example.

#include <iostream>
#include<vector>
using namespace std;
int main()
{
vector<string> v{"C","C++","Java",".Net"};
string *k=v.data();
for(int i=0;i<v.size();i++)
cout<<*k++<<" ";
return 0;
}

Output:

C C++ Java .Net

In this example, k is the pointer of string type referring to the elements of a vector v.

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.Net

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Java

Core Array ArrayList HashMap String 2D Cast Character Console Deque Duplicates File For Format HashSet If IndexOf Lambda Math ParseInt Process Random Regex Replace Sort Split StringBuilder Substring Switch Vector While

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