Print numbers from 1-100 without using numbers in the program

/*
num is static -> no need to initialize (=0)
(int)'d' = ascii value of 'd' (=100)
*/
public class Program
{
    static int num;
    
    public static void main(String[] args) {
      while(num < (int)'d'){
          
          num++;
          System.out.println(num);
      }
            
    }
}