What are Operators And Expression in C Language ??? With Free Notes

What are Operators ???

Operators are symbols which are used to perform operations of operands. In simple words, they are like the tools which helps to manipulate data in our program or also in simple words we say that Operators are used to make a Mathematical Calculation things like Adding, Subtracting, etc.

What are Expression ???

A set of values, variables, and operators combined to produce a single value is called a Expression. Expression can Range in complexity from a single value to a combination of several processes.

Types of Operators

In C Language we have Five Types of Operators,

1. Arithmetic Operator
2. Relational Operator
3. Logical Operator
4. Assignment Operator
5. Increment and Decrement Operator

C Language Notes

1. Arithmetic Operator

Arithmetic is mainly used For Mathematical Operations Like, Addition , Subtraction, etc.

Name of Operator	Symbol of Operator
Addition	+
Subtraction	–
Multiplication	*
Division	/
Modulus	%

2. Relational Operator

Relational Operators are used to compare values Like Less than, Greater than, etc.

Name of Operator	Symbol of Operator
Equal to	==
Not Equal to	!=
Less Than	<
Greater Than	>
Less than or Equal to	<=
Greater than or Equal to	>=

3. Logical Operator

Logical Operators are used to perform a logical operations.

Name of Operator	Symbol of Operator
Logical AND	&&
Logical OR	||
Logical NOT	!

4. Assignment Operator

Assignment Operators are help us to assign the values in our program.

Name of Operator	Symbol of Operator
Assign	=
Add and Assign	+=
Subtract and Assign	-=
Multiply and Assign	*=
Divide and Assign	/=
Modulus and Assign	%=

5. Unary Operator

Unary operators are act on a single operand.

Name of Operator	Symbol of Operator
Increment	++
Decrement	—
Negation	–
Logical NOT	!

Example : Operators and Expression

Let’s write a Program Where we write Expression with the use of Operators.

#include <stdio.h>

int main() {
    // Arithmetic Operators
    int num1 = 10, num2 = 5;
    int sum = num1 + num2;
    int difference = num1 - num2;
    int product = num1 * num2;
    float quotient = (float)num1 / num2; // Typecasting to get accurate division
    int remainder = num1 % num2;
    
    // Output
    printf("Sum: %d\n", sum);
    printf("Difference: %d\n", difference);
    printf("Product: %d\n", product);
    printf("Quotient: %.2f\n", quotient);
    printf("Remainder: %d\n", remainder);
    
    return 0;
}

• In this Program First we declare a Variables, Second We assign the values to that variables, and Lastly We create expression by using the Operators.