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

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The ones who are crazy enough to think they can change the world are the ones who do.
- Steve Jobs

C Switch Statement

switch statement

We use the switch statement to select from multiple choices that are identified by a set of fixed values for a given expression. The expression that selects a choice must produce a result of an integer type other than long, or a string, or a value of an enumeration type. Thus, the expression that controls a switch statement can result in a value of type char, int, short, long, string, or an enumeation constant.

C switch Syntax And Facts

  • A switch statement is an alternative to if-else-if statement.
  • The switch statement has four important elements.
  • The test expression
  • The case statements
  • The break statements
  • The default statement

C Switch Syntax

Syntax Switch Statement

switch ( variable )
case value1:
case value2:

Switch Statement Flowchart

The following flowchart clearly illustrate how switch statement works

switch statement flowchart

C Switch Statement Program

Let's take a look at the switch statement in action. In the following program we will greet either dad or mom or yourself.

#include <stdio.h>
int main()
int choice;
printf("Press 1 to greet your dad\n ");
printf("Press 2 to greet your mom\n ");
printf("Press 3 to greet yourself\n ");
scanf("%d ",&choice);
switch (choice)
case 1:
printf("\nHello dad,How are you? ");
case 2:
printf("\nHello mom,How are you? ");
case 3:
printf("\nHello awesome,How are you? ");
printf("\nInvalid choice ");
return 0;
  • Press 1 to greet your dad
  • Press 2 to greet your mom
  • Press 3 to greet yourself
  • 1
  • Hello dad,How are you?


The above program offers three choices to a user. A choice(number) entered by the user is stored in a variable choice. In switch() statement the value is checked with all the case constants. The matched case statement is executed in which the line is printed according to the user's choice. If user's choice doesn't match with any case statement, then a statement followed by default will be executed.

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