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6-6 Toupper and Tolower Functions

The sixth week will describe strings and characters (book chapter 10, 11). Up to this point in this course we deal with only numeric data. Now we are ready to introduce character and string that deal with mainly text data. We will introduce the concept of memory bits, and different types in C only means different ways to interpret the memory bits. We start with character, which is the basic unit of text information. Then we introduce string as an array of characters, and various useful functions to perform various operations on strings.

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