Creating and Resizing Vectors



#include <iostream>
#include <vector>
using namespace std;

typedef vector<int>    intVector;

template<class T, class A>
void ShowVector(const vector<T, A>& v);

int main()
{
    intVector    intValueVector;        
    cout << "intValueVector" << "\n";
    ShowVector(intValueVector);
    intVector    intValueVector2(3);    
    cout << "intValueVector2(3)" << "\n";
    ShowVector(intValueVector2);


    intValueVector2.resize(5, 100);    
                             
    cout << "intValueVector2 after resize(5, 100)\n";
    ShowVector(intValueVector2);

    intValueVector2.reserve(10);       
    cout << "intValueVector2 after reserve(10)\n";
    ShowVector(intValueVector2);

    return 0;
}

template<class T, class A>
void ShowVector(const vector<T, A>& v)
{
    cout << "max_size() = " << v.max_size();
    cout << "\tsize() = " << v.size();
    cout << "\t" << (v.empty()? "empty": "not empty");
    cout << "\tcapacity() = " << v.capacity();
    cout << "\n\n";
}

Related examples in the same category

1.	Perform an in-place merge for two vectors
2.	Using Other Search functions
3.	Matching Elements Using the equals and mismatch Operations
4.	Demonstrate count and count_if.
5.	Demonstrate remove_copy in Vector
6.	Access a vector using an iterator.
7.	Demonstrate insert and erase.
8.	Store a class object in a vector.
9.	Demonstrate allocator's max_size() fucntion in vector
10.	Demonstrate count() in vector
11.	Demonstrate count_if().
12.	Demonstrate reverse in vector
13.	Demonstrate insert_iterator in vector
14.	Demonstrate adjacent_difference() in vector
15.	Demonstrate inner_product() in vector
16.	Demonstrate partial_sum() in Vector
17.	Storing Class Objects with overloaded operators in a Vector
18.	Vector Init Array
19.	Use istream_iterator with the copy algorithm
20.	Demonstrate remove_copy and replace_copy.
21.	Vector: Insert Erase Sort
22.	Demonstrate accumulate() in vector
23.	end() in vector
24.	Use pop_back() and empty().
25.	Access the elements of a vector through an iterator.
26.	The basic operation of a vector: size, push_back,
27.	Accessing a Vector Through an Iterator
28.	Use istream_iterator to read various data types
29.	Create permutations based on vector
30.	Work with heaps: make_heap from vector
31.	Demonstrating the four ways that vectors can be created.
32.	Vector Capacity vs size
33.	Using clear()

Creating and Resizing Vectors : Vector « Data Structure « C++

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