C Foundation

What is C? C Compiler Installation C Extensions C Compiler C Interpreter C Program Structure

C Basics

C Keywords C Data Types C Identifiers C Variables C Constant C Escape Sequences C Constant and Volatile C Typecast


What is Operator C Comma Operator C Arithmetic Operators C Relational Operators C Logical Operators C Bitwise Operators C Conditional Operators C : : Operator C Operator Priority

Basic IO's

Basic IO's C Formatted Functions C Unformatted Functions C Common Functions

Control Statements

What is Control Statement C if Statement C if else Statement C Nested if Statement C Else if Statement C Break Statement C Continue Statement C Switch Statement C Goto Statement


What is Control Loop C for Loop C Nested for Loop C while Loop C Nested while Loop C do while Loop C Nested do while loop


What is Function C User Defined Functions C Recursion C Passing Parameters


Scope C Local Scope C Global Scope

Storage Classes

What is Storage Class C Auto C Extern C Static C Register


What is Array C One Dimensional Array C Two Dimensional Array C Multi Dimensional Array C Arrays Of Strings


What is String C String Functions


What is Pointer C Pointers Arithmetic C Pointer to Pointer C Pointers and Arrays C Pointers and Strings C Pointer to Functions Void Pointers Null Pointers C Null and Void Pointer


What is Structure C Struct within Struct C Array within Structure C Pointer to Structure C Structure and Function C Enum C Bitfield Structure C Type def


What is Union


What is File C read a file C write a file C File Handling C Error Handling C Low Level Disk I/O C Other file functions

Memory Allocation

What is Memory Allocation C Malloc() C Calloc() C Free() C Realloc() C Coreleft()

C Reference

All ASCII Code Basic C Questions

C Interview

C Interview Sets All Star Patterns All Number Patterns All Alphabet Patterns All Series Patterns
The ones who are crazy enough to think they can change the world are the ones who do.
- Steve Jobs

C Basic Interview Questions

6. Define keyword in C?

Keywords are those words which tells the compiler what to do . In C Programming, keywords are otherwise said to be reserved words. Keywords are always in lowercase letters. Keywords cannot be changed by a programmer. Keywords cannot be used as variable name, function name, array name by a programmer. Refer for More C Keywords

7. Define variables in C?

Generally, Variables are things which are all changable. We encounter several variables in our day-to-day life. Some Examples:

  • Time is variable which changes for every single seconds.
  • Climate is variable which changes as per season.
  • Rheostat is variable which changes to increase or to decrease circuit resistance.
  • Speed is variable, either one can accelerate to increase the speed or decelerate to decrease the speed.

Refer for More C Variables

8. Define identifiers in C?

An identifier is a name that identifies unique things. here things may be a person, object, idea or anything. The following diagram clearly represents the concept of identifier. Refer for More C Identifiers.

9. What are the different data types in C?

  • int
  • unsigned int
  • char
  • float
  • double
  • long double

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10. What are the different types operators in C?

  • Arithmetic Operators
  • Relational operators
  • Logical operators
  • Bitwise operators

Refer for More C Operators

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