using System;

class DeclarationsDemo{

  public static void Main(){
    char ch = 'A';          // A character variable
    bool b = true;          // A boolean variable
    int i = 5;              // An integer variable (4 byges)
    float s = 5.5F;         // A floating point number (4 bytes)
    double d = 5.5 ;        // A floating point number (8 bytes) 
  }

}