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:

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 <iostream>
#include<vector>
using namespace std;
int main()
{
vector<int> v{10,20,30,40,50};
int *k=v.data();
for(int i=0;i<v.size();i++)
cout<<*k++<<" ";
return 0;
}

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: