#include <iostream>

using namespace std;

class GradeBook
{
    private:
         int pi(int);
    public:
        inline int displaymessage(int);
};
int GradeBook::pi(int a)
{
    return a+=5;
}
inline int GradeBook::displaymessage(int a)
{
    return pi(a);
}
int main()
{
    int a = 10;
    GradeBook wks;
    cout << wks.displaymessage(a) << endl;
    return 0;
}