static 关键字

#include <stdio.h>



/* function declaration */

void func(void);



static int count = 5; /* global variable */



main() {



   while(count--) {

      func();

   }



   return 0;

}



/* function definition */

void func( void ) {



   static int i = 5; /* local static variable */

   i++;



   printf("i is %d and count is %d\n", i, count);

}