Expression and operator in C language

 In the C programming language, expressions are combinations of variables, constants, and operators that produce a value. Expressions can be as simple as a single variable or complex with multiple operators and operands. Operators are symbols or keywords that perform specific operations on operands within expressions. Here are some commonly used operators and examples of expressions in C:

1. Arithmetic Operators:
   - Addition (+): Performs addition of two operands.
     Example: int sum = 3 + 4;

   - Subtraction (-): Performs subtraction of two operands.
     Example: int difference = 8 - 5;

   - Multiplication (*): Performs multiplication of two operands.
     Example: int product = 2 * 6;

   - Division (/): Performs division of two operands.
     Example: float quotient = 10 / 3;

   - Modulus (%): Computes the remainder of division.
     Example: int remainder = 10 % 3;

2. Assignment Operators:
   - Assignment (=): Assigns the value on the right to the variable on the left.
     Example: int x = 5;

   - Compound Assignment Operators (+=, -=, *=, /=, %=): Performs an operation and assigns the result to the variable.
     Example: int x = 10;
              x += 5; // equivalent to x = x + 5;

3. Relational Operators:
   - Equal to (==): Checks if two operands are equal.
     Example: if (x == y) { // code block }

   - Not equal to (!=): Checks if two operands are not equal.
     Example: if (x != y) { // code block }

   - Greater than (>): Checks if the left operand is greater than the right operand.
     Example: if (x > y) { // code block }

   - Less than (<): Checks if the left operand is less than the right operand.
     Example: if (x < y) { // code block }

   - Greater than or equal to (>=): Checks if the left operand is greater than or equal to the right operand.
     Example: if (x >= y) { // code block }

   - Less than or equal to (<=): Checks if the left operand is less than or equal to the right operand.
     Example: if (x <= y) { // code block }

4. Logical Operators:
   - Logical AND (&&): Returns true if both operands are true.
     Example: if (x > 0 && y < 10) { // code block }

   - Logical OR (||): Returns true if either operand is true.
     Example: if (x > 0 || y < 10) { // code block }

   - Logical NOT (!): Returns the opposite of the operand's value.
     Example: if (!(x > 0)) { // code block }

5. Increment and Decrement Operators:
   - Increment (++) and Decrement (--): Increase or decrease the value of a variable by one.
     Example: int x = 5;
              x++; // equivalent to x = x + 1;

6. Conditional (Ternary) Operator:
   - ?: Evaluates a condition and returns one of two values based on the result.
     Example: int max = (x > y) ? x : y;

These are just a few examples of operators in C, and there are additional operators available for various purposes, such as bitwise operations, pointer operations, and more. Expressions using these operators allow you to perform calculations, make decisions, and manipulate data within your C programs.