Chapter 7, Problem 90RQE

Program Plan Intro

Vector:

The Standard Template Library (STL) includes the collection of data types and algorithms which can be used by the programmer in their programs.

• A special data type called vector is offered by STL which is useful for standard arrays.

A vector stores the elements or values in sequence order and the values are stored in continuous memory locations.

• The subscript operator “[]” in the vector helps to read the content of each element.

Initialization of vector:

In C++, the vector is initialized with the respective value as like the array but it does not use the “=” operator before the list and uses the keyword “vector”.

• The initialization list values are enclosed with the braces.

Consider the following statement:

//Declaring a vector with four values

vector <int> values {40, 32, 15, 17};

In the above line, the keyword “vector” represents the vector declaration, “<int>” represents that the vector holds integer type values, “values” represents the name of the vector, and the values inside the braces refers the values of the vector “values”.