#include <iostream.h>
#include <conio.h>

void main()
{
clrscr();
int i, j, n, c;
cout<<"Enter the upper limit of the range: ";
cin>>n;
cout<<"Prime numbers till "<<n<<" are: ";
for(i=2; i<=n; i++)
{
	c=0;
    for(j=1; j<i; j++)
        {
            if(i%j==0)
            c++;
        }
    if(c==1)
    cout<<i<<" ";
}
getch();
}

#include <iostream>
using namespace std;

int main()
{
int i, j, n, c;
cout<<"Enter the upper limit of the range: ";
cin>>n;
cout<<"Prime numbers till "<<n<<" are: ";
for(i=2; i<=n; i++)
{
	c=0;
    for(j=1; j<i; j++)
        {
            if(i%j==0)
            c++;
        }
    if(c==1)
    cout<<i<<" ";
}
return 0;
}