A summary of C basic data types is given the Table 1.1. From this table, it may be observed that charac-
ter and integer type data can also be declared as unsigned. Such data types are called unsigned data types.
In this representation, the data is always a positive number with range starting from 0 to a maximum
value. Thus, a number twice as big as a signed number can be represented through unsigned data types.
1.4 C TOKENS
A token is a group of characters that logically belong together. In fact, a programmer can write a program
by using tokens. Csupports the following types of tokens:
nIdentiers
nKeywords
nConstan ...
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