Arithmetic Operators

1. Arithmetic Operators

All the basic arithmetic operations can be carried out in C. All the operators have almost the same meaning as in other languages. Both unary and binary operations are available in C language. Unary operations operate on a singe operand, therefore the number 5 when operated by unary – will have the value –5.

Arithmetic Operators

 

 

Integer Arithmetic

When an arithmetic operation is performed on two whole numbers or integers than such an operation is called as integer arithmetic. It always gives an integer as the result. Let x = 27 and y = 5 be 2 integer numbers. Then the integer operation leads to the following results.

x + y = 32
x – y = 22
x * y = 115
x % y = 2
x / y = 5

In integer division the fractional part is truncated.

Floating point arithmetic

When an arithmetic operation is preformed on two real numbers or fraction numbers such an operation is called floating point arithmetic. The floating point results can be truncated according to the properties requirement. The remainder operator is not applicable for floating point arithmetic operands.

Let x = 14.0 and y = 4.0 then

x + y = 18.0
x – y = 10.0
x * y = 56.0
x / y = 3.50

Mixed mode arithmetic

When one of the operand is real and other is an integer and if the arithmetic operation is carried out on these 2 operands then it is called as mixed mode arithmetic. If any one operand is of real type then the result will always be real thus 15/10.0 = 1.5

Examples of arithmetic operators are

x + y
x - y
-x + y
a * b + c
-a * b

etc.,

here a, b, c, x, y are known as operands. The modulus operator is a special operator in C language which evaluates the remainder of the operands after division.

Operators

 Operators

"Operator is a symbol that is used to perform mathematical operations."

When we use a variable in a program then we have to mention the type of data. This can be handled using data type in C.

Followings are the most commonly used data types in C.

 

An operator is a symbol which helps the user to command the computer to do a certain mathematical or logical manipulations. Operators are used in C language program to operate on data and variables. C has a rich set of operators which can be classified as

1. Arithmetic operators
2. Relational Operators
3. Logical Operators
4. Assignment Operators
5. Increments and Decrement Operators
6. Conditional Operators
7. Bitwise Operators
8. Special Operators

Features and Disadvantages of array

Features :

• Array size should be positive number only.
• String array always terminates with null character ('\0').
• Array elements are countered from 0 to n-1.
• Useful for multiple reading of elements (numbers).

Disadvantages :

• There is no easy method to initialize large number of array elements.
• It is difficult to initialize selected elements.