Constants in C | ShreeSanaviAcademy Portal for Students

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Introduction Generations of Computers Classification of Computers Basic Anatomy of a Computer System Memory Management Computer Software Operating System

Algorithm Flowcharts

Programming Language Generations of Programming Languages Introduction to C Structure of C Programming Language Integrated Development Environment First C program, Hello World Executing a C Program Constants in C Variables in C C Storage Classes and Storage Class Specifiers

Introduction Arithmetic operators Relational Operators Logical Operators Assignment Operator Increment and Decrement Operators Conditional Operators Bitwise Operators Precedence and Associativity

Control Instructions in C if Statement in C if-else Statement Nested if-else statement else if ladder Switch Statements in C

Loops Introduction for Loop while loop in C do-while Loop break and continue statements

Array in C One Dimensional array Two Dimensional Array Multidimensional Arrays

Modular Programming Functions

Searching Techniques Linear Search Algorithm Binary-Search-Algorithm

Sorting Introduction Bubble Sort

What is Strings Standard Library String Functions

Structure Introduction Defining a Structure Declaration of Structure Example of Structure Union Introduction Defining a Union Accessing Union Members

Pointers in C Accessing the Address of a variable Pointer Operations

Dynamic Memory Allocation

Constants in C

Fixed values that do not change during the execution of a program are referred to be constants in C. Constants in C can be separated into two groups:

- Primary Constants
- Secondary Constants

Constructing Integer Constants Rules

At least one digit is required for an integer constant.
It can't have a decimal point in it.
It can be either positive or negative.
If an integer constant has no sign before it, it is presumed to be positive.
Within an integer constant, no commas or blanks are permitted.
The range of integer constants that can be used is -32768 to 32767.

Constructing Real Constants Rules

Floating Point constants are another name for real constants. The real constants can be expressed in two ways: fractional and exponential.
When building real constants in fractional form, the following principles must be followed:
At least one digit is required for a real constant.
A decimal point is required.
It could be either a good thing or a bad thing.
Positive is the default sign.
Within a real constant, no commas or blanks are permitted.

Character Constants Construction Rules

A single alphabet, a single numeric, or a single special sign wrapped in single inverted commas is referred to as a character constant.
A character constant can have a maximum length of one character.