Question

Write a program that asks the user to enter a positive number then displays all numbers less or equal to it that are prime each one a separate line.

Answer 1

#include <iostream>

using namespace std;

int main()
{
int n = 0;
cout<<"Please enter n: ";
cin>>n;
for(int number_test = 2; number_test <= n; number_test++){
int isPrime = 1;
for(int divisor = 2; divisor < number_test; divisor++){
if(number_test % divisor == 0){
isPrime = 0;
break;
}
}
if(isPrime)
{
cout << number_test << endl;
}
}
return 0;
}