5) Write a C++ program that finds input number is Prime number or not.

source file name: Primeno3.CPP 

#include<conio.h>

#include<iostream.h>

int  main()

{

int n,d;

clrscr();

cout<<"\n enter any  number: ";

cin>>n;

d=2;

while(d<n)

{

if(n%d==0)

{

cout<<"\n given no is not prime no: "<<n;

break;

}

else

d++;

}

if(n==d)

cout<<"\n given no is prime no: " <<n;

return 0;

}

output: