#include <stdio.h>

// Life/Scope limited to this whole program
int x = 30;

int main ()
{
     printf ("\nGlobal x: %d", x);

     // Life/Scope limited to this function
     int x = 10;
     
     {
	  // Life/Scope limited to these curly braces
	  int x = 20;
	  printf ("\nCurly x: %d", x);
     }     
     
     printf ("\nFunction x: %d", x);
     return 0;
}

int foo() { /* inside life of d, outside scope of d */
   static int x = 0;
   return ++x; }
int main() {
   int d;
   foo();
   d = 1;  /* inside life of x, outside scope of x */
   return foo(); }