// examples of variables of different types

void main()
{
  int n;            //5, 2, 0, -7
  double x;         //3.14159265
  char ch;          // 'Z', 'a', '5', '$'

  float y;          //3.1415
  long int m;       //2183283483
  unsigned int u;   //56723, not -543
  short int s;      //127, -128, -5, 95
  long double z;    //0.1284828839923882232448

  int a,b,c,d;      //declaring many vars with one statement

  int A=6;          //declaring and filling a variable in one step
  char c='M';

  double Z=4.234, X, alpha, PI=3.1415, theta;
                    //declaring many variables, and filling some
}