Prime help

[Meera Kumar]

This program works but needs to be reworked so that the main function is the one that initiates the program-rather the int getNumberFromUser and isPrime doing all the work. How would I go about doing this? Thanks!

//The program should have two functions:
//int getNumberFromUser(); -> asks user for input and ensures the number is >2
//bool isPrime(int n); -> returns true if n is prime else false.

#include <iostream>
using namespace std;

int getNumberFromUser();
bool isPrime(int);



int main()
{
int n = getNumberFromUser();
isPrime(in);
return 0;
}


int getNumberFromUser()
{
int num;
cout << "Please enter a positive integer\n";
cin >> num;
if (num>=2)
return num;
else
cout<<"Please enter a number greater than or equal to 2";
}

bool isPrime(int n)
{
int num, prime;
for(int i=2; i<=num; i++)
{
prime=true;
for(int n=2; n<=(i-1); n++)
{
if(i%n==0)
{
prime = false;
}
}
if(prime)
{
cout << i << " is prime\n";
}
}
return prime;
}

[Athar]

the main function is the one that initiates the program

main() is always the first function being called when your program starts, whether you want it or not.

[ceruleus]

Is this something your teacher asked you to do? Either you or your teacher is confused here.

Is your teacher asking you not to use functions?

Please elaborate!