Fundamentals of Computer Programming - Old Questions

2. What are the different types of operators available in C?Explain.

An operator is a symbol that operates on single or multiple data items. It is used in program to perform certain mathematical or logical manipulations. E.g. In a simple expression 2+3, the symbol “+” is called an operator which operates on two data items 2 and 3.

C operators can be classified into following types:

1. Arithmetic Operators

Arithmetic operators are used to perform arithmetic operations. There are five arithmetic operators:

2. Relational Operators

- Relational operators are used to compare two operands and taking decisions based on their relation.

-  Result of relational expression is either True(1) or False(0).

-  Relational operators are used in decision making and loops.

-  Relational operators are:

3. Logical Operators

- Logical operators are used to compare logical and relational expression.

- The operands of logical operators must be either Boolean value (1 or 0) or expression that produces Boolean value.

-  The output of these operators is always 0 (flase) or 1 (true).

The logical operators are:  

4. Assignment Operator

-  Assignment operators are used to assign the result of an expression to a variable.

-  The mostly used assignment operator is ‘=’. 

-   C also supports shorthand assignment operators which simplify operation with assignment.

5. Increment and Decrement Operators

- Increment operator is used to increase the value of an operand by 1.

- Decrement operator is used to decrease the value of an operand by 1.  

6. Conditional Operator (Ternary Operator)

-  It takes three arguments.

- Conditional operators return one value if condition is true and returns another value if condition is false.

Syntax: (condition) ? value_if_true : value_if_false

etc.