#include <iostream>
#include <stdlib.h>
#define MAXNUM -12
#define PI 3.1415
#define END "
Program has ended!!
"
#define ADD(a, b, c) (a + b + c)
using namespace std;
int main(){
#ifdef _WIN32
cout<<"Windows Operating System Detected"<<endl;
#elif __unix__
cout<<"UNIX Operating System Detected"<<endl;
#else
cout<<"Operating System could NOT be identified!"<<endl;
#endif
cout<<endl<<"Using pre-defined values and operations: "<<endl;
cout<<" • MAXNUM: "<<MAXNUM<<endl;
cout<<" • PI: "<<PI<<endl;
cout<<" • ADD(): "<<ADD(2,5,99.5)<<endl;
cout<<END;
return 0;
}