Ivor Horton's Beginning Visual C++ 2012

SUMMARY

You are now familiar with all of the basic types of values in C++, how to create and use arrays of those types, and how to create and use pointers. You have also been introduced to the idea of a reference. However, we have not exhausted all of these topics. I’ll come back to arrays, pointers, and references later in the book.

The pointer mechanism is sometimes a bit confusing because it can operate at different levels within the same program. Sometimes it is operating as an address, and at other times it can be operating with the value stored at an address. It’s very important that you feel at ease with the way pointers are used, so if you find that they are in any way unclear, try them out with a few examples of your own until you feel confident about applying them.

EXERCISES

1. Write a program that allows an unlimited number of values to be entered and stored in an array allocated in the free store. The program should then output the values, five to a line, followed by the average of the values entered. The initial array size should be five elements. The program should create a new array with five additional elements, when necessary, and copy values from the old array to the new.

2. Repeat the previous exercise but use pointer notation throughout instead of arrays.

3. Declare a character array, and initialize it to a suitable string. Use a loop to change every other character to uppercase.

Hint: In the ASCII character set, values for uppercase characters are 32 ...