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#include <iostream> 
using namespace std;
 
int lol(int n,int *p)
{
 
    int j = 0;
 
    for (j = 1; j <= n; j++)
    {
        if ((n % 2 == 0) && (j % 2 == 0))
        {
            *p = p * j;
 
        }
 
        if ((n % 2 != 0) && (j % 2 != 0))
        {
            *p = p * j;
        }
    }
    return *p;
}
 
int main()
 
{
    int n;
    cout << "N: " << " ";
    cin >> n;
    if (lol(2 * &n) > 127)
    {
        cout << "Sorry , but no." << endl;
    }
    else
        cout << "Everything is fine." << endl;
 
}

prog.cpp: In function ‘int lol(int, int*)’:
prog.cpp:13:20: error: invalid operands of types ‘int*’ and ‘int’ to binary ‘operator*’
             *p = p * j;
                  ~~^~~
prog.cpp:19:20: error: invalid operands of types ‘int*’ and ‘int’ to binary ‘operator*’
             *p = p * j;
                  ~~^~~
prog.cpp: In function ‘int main()’:
prog.cpp:31:15: error: invalid operands of types ‘int’ and ‘int*’ to binary ‘operator*’
     if (lol(2 * &n) > 127)
             ~~^~~~

Standard output is empty