Answer Posted / sudha

#include<stdio.h>
#include<conio.h>
void main()
{
int isprime=1;
int n,i;
printf("enter a number");
scanf("%d",&n);
if(i=2;i<=n/2;i++)
{
if((n%i)==0)
{
isprime=0;
break;
}
}
if(isprime==1)
{
printf("%d is a prime number",n);
}
else
{
printf("%d is not a prime number",n);
}
getch();
}

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