C

//Third question in OOP Labs ( C )
#include"iostream"
#include"string"
using namespace std;
class secondClass;
class firstClass
{
private:
    int a[5];
public:
    void set()
    {
        int i;
        for (i = 0; i < 5; i++)
        {
            cout << "Enter Data A : ";
            cin >> a[i];
        }
    }
    friend void sum(firstClass, secondClass);
};
class secondClass
{
private:
    int b[5];
public:
    void set()
    {
        int i;
        for (i = 0; i < 5; i++)
        {
            cout << "Enter Data  B : ";
            cin >> b[i];
        }
    }
    friend void sum(firstClass, secondClass);
};
void  sum(firstClass f, secondClass s)
{
    int sum1 = 0, sum2 = 0,i;
    for (i = 0; i < 5; i++)
    {
        sum1 += f.a[i];
        sum2 += s.b[i];
    }
    if (sum1 < sum2)
    {
        cout << "The Biggest is B : " << sum2 << endl;
    }
    else
        cout << "The Biggest is A : " << sum1 << endl;
}
int main()
{
    firstClass f;
    secondClass s;
    f.set();
    s.set();
    sum(f, s);
}