7. C++ program to find prime number.

#include <iostream>
int main()
{
int l, i, j, k;
clrscr();
l=0;
cin >>n;
for(i=1;i<=n;i++)
{
for(j=2;j<=(i-1);j++)
{
k=i%j;
if (k==0)
l=1;
else
l=l;
}
if (l==0)
cout <<"The number is prime \n"<<i;
else
cout <<"This is not a prime number \n"<<i;
l=0;
}
return 0;
}