C Primer Plus®, Third Edition

Chapter 3. Data and C

You will learn about the following in this chapter:

• Keywords

  int, short, long, unsigned, char, float, double
  

• Operator

  sizeof
  

• Function

  scanf()
  

In this chapter, you learn about the basic data types that C uses and about the distinctions between integer types and floating-point types. You practice writing constants and declaring variables of those types. You begin studying how to use the printf() and scanf() functions to read and write values of different types.

Programs work with data. You feed numbers, letters, and words to the computer, and you expect it to do something with the data. For example, you might want the computer to calculate an interest payment or display a sorted list of vintners. In this chapter, you do ...