#include <stdio.h>

int a = 0;              // Global - accessible anywhere in file.

void test (int b)       // Parameter.
{
  static int c = 0;     // Static - retains its value over successive function calls.
  int d = 0;            // Local.

  if (b >= 0) {
    int e;              // Local inside block - ANSI C99 only.

    e = a + b + c + d;  // a,b,c,d are accessible anywhere in test.
                        // e is accessible only after this declaration inside the if-block.

    printf ("e=%d\n", e);
  }

  c++;
}


int main ()
{
  a++;                  // "a" is accessible in all functions in the file.

  test (1);             // What is printed out each time?
  test (2);
}