// finds maximum number input
// demonstrates "iterate and keep track" idiom
// Mikhail Nesterenko
// 1/27/2014


#include <iostream>

using std::cin; using std::cout; using std::endl;

int main(){

   cout << "Input number [0 to quit]: ";
   int n;
   cin >> n; 

   int max = n; // traking variable

   while (n != 0 ) {
      cin >> n; 
      if (n > max) max = n; 
   } 

  cout << "Maximum number: " << max << endl;
}