Answer Posted / karthik

#include<stdio.h>
#include<conio.h>
void main()
{
int n,flag;
clrscr();
printf("\n Enter prime no\n");
scanf("%d",&n);
for(int i=2;i<=n/2;i++)
{
if(n%i==0)
{
flag=0;
break;
}
}
if(flag==0)
printf("\n%d is not prime",n);
else
printf("\n %d is prime",n);
getch();
}

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