standard template library.

Write a C++ program to illustrate the concept of standard template library.

Program Algorithm:

Step 1: Include the header files

Step 2: Create a vector to store int

Step 3: Display the original size to store int

Step 4: Push 5 values into the vector using for loop

Step 5: Display extended size of vec

Step 6: Access 5 values from the vector

Step 7: Use iterator to access the values

Program Code in C++:

#include <iostream.h>

#include <vector>

using namespace std;

int main()

{

vector<int> vec;

int i;

cout << "vector size = " << vec.size() << endl;

for(i = 0; i < 5; i++)

{

vec.push_back(i);

}

cout << "extended vector size = " << vec.size() << endl;

for(i = 0; i < 5; i++)

{

cout << "value of vec [" << i << "] = " << vec[i] << endl;

}

vector<int>::iterator v = vec.begin();

while( v != vec.end()) 

{

cout << "value of v = " << *v << endl;

v++;

}

return 0;

}

Program Output:

vector size = 0

extended vector size = 5

value of vec [0] = 0

value of vec [1] = 1

value of vec [2] = 2

value of vec [3] = 3

value of vec [4] = 4

value of v = 0

value of v = 1

value of v = 2

value of v = 3

value of v = 4