check whether the given number is Palindrome, Armstrong and Prime

PROGRAM:

#include<stdio.h>

#include<math.h>

main()

{

int a,i,sum=0,n,ch,m;

printf("\nEnter a Number\n"); scanf("%d",&a);

printf("\n1.Palindrome\n2.Armstrong\n3.Prime\n"); printf("\nEnter the Choice:\n");

scanf("%d",&ch);

switch(ch)

{

case 1:

n=a;

while(a>0)

{

i=a%10;

sum=(sum*10)+i;

a=a/10;

}

if(n==sum)

printf("Given Number is Palindrome\n");

else

printf("Given Number is Not Palindrome\n"); break;

case 2:

n=a; do

{ i=a%10; sum=sum+(i*i*i);  a=a/10;

}while(a>0);

if(n==sum)

printf("Given Number is Armstrong\n");

else

printf("Given Number is Not Armstrong\n");

break; case 3:

m=5;

n=sqrt(a);

for(i=2;i<=n;i++)

{

if(a%i==0)

{

m=0;

break;

}

}

if(m==0)

printf("Given Number is Prime\n");

else

            printf("Given Number is Not Prime\n");

break;

}

}

 OUTPUT:

Enter a Number 121 1.Palindrome 2.Armstrong 3.Prime

Enter the Choice: 1

Given Number is Palindrome