CIS 250 - The vector class

Objectives

• demonstrate the use of the vector class
• demonstrate techniques with vectors

vector class

• vectors are like having a dynamic array that you can add and remove items from
• use: #include <vector>
• use: using std::vector;
• example using an imaginary Pet class:
  • declare a vector to hold Pet objects: vector<Pet> pets;
  • create a Pet object: Pet pet(param1, param2, ...);
  • add the Pet object to the vector: pets.push_back(pet);
  • accessing the first Pet object in the vector: pets[0]
  • getting the size/length of the vector: pets.size()
  • accessing the last Pet object in the vector: pets[pets.size()-1]