24.WAP TO SHOW THE FUNCTIONING OF "switch case "statement.

//WAP TO SHOW THE FUNCTIONING OF "switch case "statement.

#include

#include

void main()

{

long int fact=1,num,i,ch;

clrscr();

while(1)

{

printf("\n\n1.FACTORIAL");

printf("\n\n2.TO CHECK THE NO.FOR PRIME");

printf("\n\n3.TO CHECK THE NO.FOR EVEN OR ODD");

printf("\n\n4.TO EXIT");

printf("\n\n5.ENTER YOUR CHOICE=");

scanf("%li",&ch);

switch(ch)

{

case 1:

printf("\nENTER THE NUMBER=");

scanf("%li",&num);

for(i=1;i<=num;i++)

fact=fact*i;

printf("\n\n\nFACTORIAL OF A NUMBER=%li",fact);

break;

case 2:

printf("\nENTER THE NUMBER=");

scanf("%d",&num);

i=2;

while(i<=num-1)

{

if(num%i==0)

{

printf("\n\n\nENTERED NO.IS NOT A PRIME NO.");

break;

}

i++;

}

if(i==num)

printf("\n\n\nENTERED NUMBER IS A PRIME NUMBER");

break;

case 3:

printf("\nENTER THE NUMBER=");

scanf("%d",num);

if(num%2==0)

printf("NUMBER ENTERED IS A EVEN NUMBER");

else

printf("NUMBER ENTERED IS A ODD NUMBER");

break;

case 4:

exit() ;

getch();

}}}

/******OUTPUT******

1.FACTORIAL

2.TO CHECK THE NO.FOR PRIME

3.TO CHECK THE NO.FOR EVEN OR ODD

4.TO EXIT

5.ENTER YOUR CHOICE=1

ENTER THE NUMBER=5

FACTORIAL OF A NUMBER=120

1.FACTORIAL

2.TO CHECK THE NO.FOR PRIME

3.TO CHECK THE NO.FOR EVEN OR ODD

4.TO EXIT

5.ENTER YOUR CHOICE=2

ENTER THE NUMBER=3

ENTERED NUMBER IS A PRIME NUMBER

1.FACTORIAL

2.TO CHECK THE NO.FOR PRIME

3.TO CHECK THE NO.FOR EVEN OR ODD

4.TO EXIT

5.ENTER YOUR CHOICE=3

ENTER THE NUMBER=2

NUMBER ENTERED IS A ODD NUMBER

1.FACTORIAL

2.TO CHECK THE NO.FOR PRIME

3.TO CHECK THE NO.FOR EVEN OR ODD

4.TO EXIT

5.ENTER YOUR CHOICE=4

Null pointer assignment

*/