Switch-Case Statement in C

 Switch-Case Statement in C

Switch-Case statement in C allows us to execute multiple operations for the different possible values of a single variable called switch variable. Here, We can define various statements in the multiple cases for the different values of a single variable. A switch statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each switch case.

Syntax :

switch (expression)

{   

case value1:   

            {

Statements of case 1

break;

}

case value2:

{

Statements of case 2

break;

}

case value3:

            {

Statements of case 3

break;

}

.....   

default: 

            {  

 code to be executed if all cases are not matched;

}

}   //End of switch case statement

Rules for switch statement in C language

Ø  The case value must be an integer or character constant.

Ø  The case value can be used only inside the switch statement.

Ø  The switch expression must be of an integer or character type.

Flowchart of switch statement in C

Example Program :

//Example program of swith case statement

//satyamsrig.blogspot.in

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

int ch;

printf("Enter the number of month\n");

scanf("%d",&ch);

switch(ch)

{

case 1:

{

printf("January");

break;

}

case 2:

{

printf("February");

break;

}

case 3:

{

printf("March");

break;

}

case 4:

{

printf("April");

break;

}

case 5:

{

printf("May");

break;

}

case 6:

{

printf("June");

break;

}

case 7:

{

printf("July");

break;

}

case 8:

{

printf("August");

break;

}

case 9:

{

printf("September");

break;

}

case 10:

{

printf("October");

break;

}

case 11:

{

printf("November");

break;

}

case 12:

{

printf("December");

break;

}

default :

{

printf("You have entered wrong keyword");

}

}

getch();

}

Example Program Youtube Video :