Monday, 4 March 2013

Relational Operators



2. Relational Operators

Often it is required to compare the relationship between operands and bring out a decision and program accordingly. This is when the relational operator come into picture. C supports the following relational operato rs.






It is required to compare the marks of 2 students, salary of 2 persons, we can compare them using relational operators.

A simple relational expression contains only one relational operator and takes the following form.

exp1 relational operator exp2

Where exp1 and exp2 are expressions, which may be simple constants, variables or combination of them. Given below is a list of examples of relational expressions and evaluated values.

6.5 <= 25 TRUE
-65 > 0 FALSE
10 < 7 + 5 TRUE


Relational expressions are used in decision making statements of C language such as if, while and for statements to decide the course of action of a running program.

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