9 – Operators in C Language

In this chapter, we will look into the way that how each Operators in C works.

Operators

A symbol which tells the compiler to perform specific mathematical or logical function is called an Operator. C language has various built-in operators.

Types

C provides the following type of operators.

  • Arithmetic operators
  • Relational Operators
  • Logical operators
  • Bitwise operators
  • Assignment operators
  • Misc operators

Arithmetic Operators

All the arithmetic operators which are supported by the C language are shown in the following table & assume that variable A holds 10 & variable B holds 20, then:

Relational Operators

All the relational operators which are supported by the C language are shown in the following table & assume that variable A holds 10 & variable B holds 20, then:

Logical Operators

All the logical operators are shown in the following table & assume that variable A holds 10 & variable B holds 20, then:

Bitwise Operators

The operator works on bits & perform bit-by-bit operation. The Truth table for &, |, and ^ is as follows:

Assume A = 60 & B = 13 in binary format, then they will be as follows:

A = 0011 1100

B = 0000 1101

………………………..

A&B = 0000 1100

A|B = 0011 1101

A^B = 0011 0001

~A = 1100 0011

All the Bitwise operators which are supported by the C language are shown in the following table & assume that variable A holds 60 & variable B holds 13, then:

Assignment Operators

The assignment operators which are supported by the C language are shown in the following table.

Misc Operators -> Sizeof & ternary

Besides the operators, which are discussed above, there are few other important operators including Sizeof & ?:

Operators Precedence in C

It determines the grouping of terms in an expression & decides how an expression is evaluated. Some operators have higher precedence than others.
For Example: The multiplication operator has higher precedence than Addition operator.

For Example: x = 7 + 3 * 2;
Here, x is assigned 13 not 20 because * operator has a high precedence than +, so first, it get multiplied with 3 * 2 & then adds with 7.

In the below table, operators of high precedence appear at the top of the table & lowest at the bottom.

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