1. Chapter 8 Arrays, Strings and pointers
8c: Vector (array)

2. Chapter Goals: To learn basic concept of vector
To learn how to access vector
To grow or shrink vector
To apply vector using function
To develop vector algorithm

3. 8.1 Concepts
the size of the array has to be known when the program is compiled.
A vector collects a sequence of values, just like an array does, but its size can change
(more convenient than partial filled array)
A vector expands to hold as many elements as needed

4. 8.2 Define
Example:

5. Use bracket to access vector element
Just like you do with array
Size member function to obtain current size of vector

6. 8.2 Access Vector push_back Example 1: Example 2:
add element to the end of vector, increasing size by 1.
Example 1:
Example 2:

7. 8.2 Access Vector pop_back Example:
Removes the last element of vector, shrinking size by 1.
Example:

8. 8.3 Vector & Function
Vectors can occur as function arguments and return values.
Use a reference parameter to modify the contents of a vector.
a function can return a vector

9. 8.4 Vector Algorithm
Refer textbook p288.

10. Exercise 35. vector <int> primeNum; primeNum.push_back(2);
36.
vector <int> primeNum(5);
primeNum[0] = 2;
primeNum[1] = 3;
primeNum[2] = 5;
primeNum[3] = 7;
primeNum[4] = 11;
37.
Ann
Cal

11. Exercise