Init static data before object creation

#include <iostream>
using namespace std;

class StaticMemberClass {
  static int i;
public:
  static void init(int x) {
     i = x;
  }
  void show() {
     cout << i;
  }
};

int StaticMemberClass::i; // define i

int main()
{
  
  StaticMemberClass::init(100);

  StaticMemberClass x;
  x.show(); 

  return 0;
}

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Init static data before object creation : Static « Language « C++

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