Some characters do not have their own symbol and must be referenced by an escape sequence. Some escape sequences are: '\\'-- backslash '\''-- single quotation mark '\"'-- double quotation mark '\b'-- backspace '\n'-- new line '\r'-- carriage return '\t'-- tab A string is a sequence of characters ending in the null character (whose escape sequence is '\0' ). As a beginner, you can usually ignore this definition because strings are usually simply written as constants between double quotes, such as: "florsheim" or "Enter the quantity of shipments:\t" More Data Types There are more primitive data types in C++ which are variation on the ones described above. They are as follows: • unsigned char-- takes non-negative values twice as high as normal chars. • unsigned int-- similarly, takes on non-negative values up to twice the highest value of normal ints. • long-- or long int , are like int s, but can take on much larger values. • unsigned long int
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