Operators are the symbols which performs various operations on operands such as addition,subtraction,multiplications,divisions or modulus etc.

- Operators performs various mathematical operations.
- operands are which on which operators performs these operations.
- Operators performs operations and results stored into the variables (operands) as result value of expression.
- C provides various operators which are as follows:

- Arithmetic operators
- Increment and decrements operators
- Logical operators
- Bitwise operators
- Assignment operators
- Relational operators
- Cast operators

- Arithmetic operators : Arithmetic operators are used to performs various Arithmetic operations on operands.Arithmetic operators must have two operands. Arithmetic operators are : + (addition) , -(subtraction), *(multiplication) , /(division), %(modulus)

Example : a+b=c

- Increment and decrements operators : This operator used to add or subtract number by 1 Increment operator used to increment operand value by 1 and decrement operand used for decrements value by 1.We only require one operand for this.operator can be prefix or postfix that is write operand after and before operators.

Increment ++ , Decrement —

- Prefix operators : In this we write operators before the operands.that is value first increments before the result of expression.
- Postfix operators : In this we write operators after the operands.that is value first increments after the result of expression.

Example : a++;

–b;

- Logical Operators : Logical operators used for performing logical operations such as Logical AND , Logical OR , Logical NOT.

- Logical AND (&&) : This operator returns true if both operands are non zero.
- Logical OR(||) : This operators returns true if either one of two operands are non zero.
- Logical NOT(!) : This operators used to make condition reverse that is if condition true it returns false.

- Relational Operators : This operators used to check relation between the two operands.Relational operators are as follow:

- < Less than
- > greater than
- <= Less than equal to
- >=greater than equal to
- == equal to

- Assignment Operators : This used for assigning the result to operand after expression solved.we assign result to operands which is at left end.Assignment operators are as follow:

- = equal to
- += Add and assign result to operand a+=b => a=a+b
- -= subtract and assign result to operand a-=b => a=a-b
- *= multiply and assign result to operand a*=b => a=a*b
- /= divide and assign result to operand a/=b => a=a/b

- Bitwise Operator : This performs on bit present in each byte of variable.bit can be 0 or 1.bitwise operators are as follow:

- ~ one’s complements
- << left shift (Binary multiplication by 2)
- >> Right shift (Binary divide by 2)

- Cast Operators :This used to convert a value of operands to another type that is int to float or any type.

Example : float(10);

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//program to understand Logical and relational operator and Assignment operator and cast operator. #include<stdio.h> void main() { int no1,no2; no1=5; //Assignment operator no2;10; printf("Assignment operator executed and no1=%d\n",no1); if(no1==5 && no2==10) { printf("Logical AND operator executed\n"); } if(no1<no2){ printf("Relational < operator executed"); } float(no2); printf("Cast operator executed no2=%f",no2); } Output: Assignment operator executed and no1=5 Logical AND operator executed Relational < operator executed Cast operator executed no2=10.0 |

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//program to understand arithmetic operators and Increment and decrement operators. #include<stdio.h> void main(){ int no1,no2,add,sub,mul,div; int inc,dec; no1=10; no2=10; inc=2; dec=2; add=no1+no2; sub=no1-no2; mul=no1*no2; div=no1/no2; printf("addition=:%d\n",add); printf("subtraction=:%d\n",sub); printf("multiplication=:%d\n",mul); printf("division=:%d",div); printf("Postfix Increment=:%d\n",inc++); printf("Prefix Decrements=:%d\n",--dec); } Output: addition=20 subtraction=0 multiplication=100 division=0 Postfix Increment=2 Prefix Decrements=1 |

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