Example Program In C++
#include<iostream>
#include<conio.h>
#include<math.h> // Math.h For sqrt function
using namespace std;
int main()
{
// Variable Declaration
int n;
// Get Input Value
cout<<“Enter the Number :”;
cin>>n;
cout<<“List Of Prime Numbers Below “<<n<<endl;
//for Loop Block For Find Prime Number
for (int i=2; i<n; i++)
{
bool prime=true;
for (int j=2; j*j<=i; j++)
{
if (i % j == 0)
{prime=false;
break;
}
}
if(prime) cout << i << endl;
}
// Wait For Output Screen
getch();
return 0;
}
Output:
Enter the Number :50
List Of Prime Numbers Below 50
5
7
11
13
17
19
23
29
31
37
41
43
47