Chapter 21 // Drill 2 - 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 - Principles & Practice Using C++

In this exercise I am using Visual Studio 2019 and a modified version of the std_lib_facilities header found here.

Chapter 21 // Drill 2.1

Define a map<string, int> called msi.

Chapter 21 // Drill 2.2

Insert ten (name, value) pairs into it, e.g., msi["lecture"]=21.

Chapter 21 // Drill 2.3

Output the (name, value) pairs to cout in some format of your choice.

Chapter 21 // Drill 2.4

Erase the (name, value) pairs from msi.

Chapter 21 // Drill 2.5

Write a function that reads value pairs from cin and places them in msi.

Chapter 21 // Drill 2.6

Read 10 pairs from input and enter them into msi.

Chapter 21 // Drill 2.7

Write the elements of msi to cout.

Chapter 21 // Drill 2.8

Output the sum of the (integer) values in msi.

Chapter 21 // Drill 2.9

Define a map<int, string> called mis.

Chapter 21 // Drill 2.10

Enter the values from msi into mis; that is, if msi has an element ("lecture",21), mis should have an element (21, "lecture").

Chapter 21 // Drill 2.11

Output the elements of mis to cout.

Github: https://github.com/l-paz91/principles-practice/blob/master/Chapter%2021/Drill%202%20-%20All%20drills

For Drill 2.4 I wasn't sure if he meant erase a few or erase all so I went with erase all.

With Drill 2.7 I think he meant create an overload of the output operator for the map as creating a print function has already been done.

Whilst doing 2.9 I decided to make my functions more generic so they could accept maps of almost any type.