Program to find a prime number next to given integer

//   CPP program to find a prime number next to a given integer

#include"iostream"

using namespace std;

int func(int n)
{
    int count=0;
    for(int i=2; i<=n; i++)
    {
        if(n % i == 0)
        {
            count++;
        }
    }

    if(count < 2)
    {
       
        return n;
       
    }
    else
    {
        func(n+1);
   
    }
}

int main()
{
    int num;
    cout<<"Enter a number: ";
    cin>>num;

    int res = func(num);
    cout<<"The prime number next to "<<num<<" is: ";
    cout<<res<<endl;
}

Output: