C Expressions
What does an expression mean?
A set of
symbols is used to perform any calculation\evolution or to frame any condition
to perform the task in any of the programming language . These set of symbols
makes an expression.
In C, An expression is a collection of
operators and operands that represents a specific value.
In the above
definition, operator denotes a symbol that performs tasks like
arithmetic, logical and conditional operations etc.,
Operands denotes the values on which the operators perform the specific
task. Here operand can be considered as direct value or variable or address of
memory location.
Expression Types in C
In C programming language, expressions are classified into three (3) types on the basis of position of operator in the expression.
These are:-
- Infix Expression
- Postfix Expression
- Prefix Expression
1)Infix Expression
The expression
in which operator is used between operands is called as infix expression.
General structure of infix expression is …
Operand1 Operator Operand2
Example:- ( a + b)
Operand1 Operand2
Operand
2)Postfix Expression
The expression
in which operator is used after operands is called as postfix expression.
The general structure of postfix Expression is:
Operand1 Operand2 Operator
Example:- ab+
Operand1 Operand2 Operator
3)Prefix Expression
The expression
in which operator is used before operands is called as prefix expression.
The general structure of Prefix Expression is…
Operator Operand1 Operand2
Exampleà +ab
Operator Operand1 Operand2
