int to void change

#include <iostream>
using namespace std;

  void cmmogl ( int a, int b, int c, int d )
  {
      cout << "a = "; cin >> a;
      cout << "b = "; cin >> b;
      cout << "c = "; cin >> c;
      cout << "d = "; cin >> d;

      int ogl = 0;

      while ( a!=0) {
        ogl = ogl * 10 + a % 10;
        a = a /10;
      }
      cout << ogl << " ";

    ogl = 0;
       while ( b!=0) {
        ogl = ogl * 10 + b % 10;
        b = b /10;
      }
      cout << ogl << " ";
      ogl = 0;
       while ( c!=0) {
        ogl = ogl * 10 + c % 10;
        c = c /10;
      }
      cout << ogl << " ";
      ogl = 0;

       while ( d!=0) {
        ogl = ogl * 10 + d % 10;
        d = d /10;
      }
      cout << ogl << " ";

  }


int main(){

    int a,b,c,d;
    cmmogl(a,b,c,d);



}