Ques: What do you mean by operator and operand? What are unary operators? How many operands are associated with a unary operator?

The definition of operator ,operand and unary operator is given below.

Solution:

Operator: C is very in built-in operators.An operator is a symbol that tells the compiler to perform specific mathematical or logical manipulations.

Operand: The data items that operators used are called operand.

Unary operator: C includes a class of operators that act upon a single operand to produce a new value.Such operators are known as Unary operator.

Unary operator are below:

+ + ( Increment).
- - (Decrement).
- (unary minus ).

How many operators are associated with a unary operator: Only one operator is associated with a unary operator.Such as....


a++ ......here is one operand.
++a .....here is one operand.

Ques: What do you mean by token? Classify the c token?

Solution:


Token: We write a program with a programming language C.Then this program contains some words (a-z,0-9,........),some special words(#,%,.......),bracket,punctuation etc.Every each group is called token.



Classification of C token:

There are six types of token in C.


1.keywords......(do, if, auto,while,.....)

2.identifiers......(num, sum,......) 

3.constants.....(const pi=3.1416)

4.string constants....("bangladesh")

5.operators and expressions.....(a=b+c,....)

6.punctuators......(; , . , .........)