# C Expressions

# Overview

In this tutorial, we will learn about C Expressions. An expression is a combination of operands, operators, and function calls that resolves or reduces to a single value.

## C Expressions

Expressions can be broadly classified into two categories:

- Simple Expressions
- Complex Expressions

## Simple Expressions

Simple expressions can be categorized into different types. The expression categories are as follows:

- Primary
- Prefix
- Postfix
- Unary
- Binary
- Ternary

## Example

In this example, *a* and *b* are operands. The * is an operator. The operator is a multiplication operator that calculates the product of two values. The * operator is a binary operator. It requires two operands for the expression.

The *result* on the right-hand side (RHS) is a variable. The value of the expression is computed and stored in the variable *result*.

*result = a * b;*

If the operand values are:

a = 3;

b = 5;

In this example, a * b is an expression. When calculated it reduces to the value 15.

## Code

/** ********************************** * Program Description: * C Expressions Demo * Filename: expr.c * C Tutorials - www.TestingDocs.com ************************************* */ #include<stdio.h> int main() { // declare variables int a = 3; int b = 5; int result = 0; /* Simple expression */ result = a * b; printf("Result = %d \n",result); /* Complex expression */ return 0; } // end main

## Complex Expressions

Complex expressions are expressions formed by one or more simple expressions.

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## C Tutorials

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