HackerRank Preprocessor Solution in c++ programming

In this HackerRank Preprocessor solution problem in the c++ programming language, you need to add the preprocessor macros necessary to make the code work.

HackerRank Preprocessor solution problem c++ programming.

/* Enter your macros here */
#define INF (unsigned)!((int)0)
#define FUNCTION(name,operator) inline void name(int &current, int candidate) {!(current operator candidate) ? current = candidate : false;}
#define io(v) cin>>v
#define toStr(str) #str
#define foreach(v, i) for (int i = 0; i < v.size(); ++i)

#include <iostream>
#include <vector>
using namespace std;

#if !defined toStr || !defined io || !defined FUNCTION || !defined INF
#error Missing preprocessor definitions
#endif 

FUNCTION(minimum, <)
FUNCTION(maximum, >)

int main(){
  int n; cin >> n;
  vector<int> v(n);
  foreach(v, i) {
    io(v)[i];
  }
  int mn = INF;
  int mx = -INF;
  foreach(v, i) {
    minimum(mn, v[i]);
    maximum(mx, v[i]);
  }
  int ans = mx - mn;
  cout << toStr(Result =) <<' '<< ans;
  return 0;

}

Second solution

// Sample solution
#define toStr(x) #x
#define io(s) cin >> s
#define foreach(list, index) for(int index = 0; index < list.size(); index++)
#define FUNCTION(name, op) void name(int &x, int y){ if(!(x op y)) x = y; }
#define INF 1e9
/* Locked from here down --------------------------------------------------------- */
#include <iostream>
#include <vector>
using namespace std;

#if !defined toStr || !defined io || !defined FUNCTION || !defined INF
#error Missing preprocessor definitions
#endif 

FUNCTION(minimum, <)
FUNCTION(maximum, >)

int main(){
    int n; cin >> n;
    vector<int> v(n);
    foreach(v, i) {
        io(v)[i];
    }
    int mn = INF;
    int mx = -INF;
    foreach(v, i) {
        minimum(mn, v[i]);
        maximum(mx, v[i]);
    }
    int ans = mx - mn;
    cout << toStr(Result =) <<' '<< ans;
}