/* Global variable are known throughout the program and 
   may be used by any piece of code.
*/

#include <stdio.h>

int count; //count is global

void func1(void); //function prototype
void func2(int count); //function prototype

int main(void)
{
	count = 100;
	func1(); //function invocation
	printf("main: count is %d\n", count);

	return 0;
}

// function definition
void func1(void)
{
	int count=10;
	func2(count); //function invocation
	printf("func1: count is %d\n", count);
}

//function definition
void func2(int count)
{
	int i;
	for (i = 0; i < count; i++)
		putchar('.');
	printf("\nfunc2: count is %d\n", count);
}