DAY28
Monday, 16 July 2012

Today we might talk about:

• How characters work; how to capitalize a character; how to represent a single quote; special characters like newline and null and backslash;
• How a "string" is simply an array of characters;
• Working with known-length strings: capitalize a string, concatenate two strings;
• Variable length string: using the null character as a terminator;
• Working with variable length strings: initialize, concatenate, and test for equality
• Reading a string from the terminal using scanf;

Programs and functions we might talk about:

• equalstrings.c, a function which is true if two (variable length) strings are equal.
• p10.1.c, a program which concatenates two known-length strings.
• p10.2.c, a program which determines the length of a variable-length string.
• p10.3.c, a program which concatenates two variable-length strings.
• p10.4.c, a program which compares two variable-length strings for equality.
• p10.5.c, a program which asks the user to enter text, and reads three words of that text.
• printable.c, Shows the first 128 characters - if they are printable, and a "*" if not.
• special.c, a program which shows how to set and print special characters, such as a single or double quote, a backslash, or a new line.
• stringlength.c, a function which returns the length of a (variable length) string.
• upper_lower.c, a program which shows how to go between lowercase and uppercase characters.