#include <stdio.h>

void func1(void);
void func2(void);

int main()
{
	int x = 5;
	printf("In main x = %d\n", x);
	func1();
	x = x + 5;
	printf("In main x = %d\n", x);
	func2();
	x = x + 5;
	printf("In main x = %d\n", x);

	return 0;
}

int x;

void func1(void)
{
	printf("In func1 x = %d\n", x);
	x = 15;
	printf("In func1 x = %d\n", x);
	x = x + 10;
	printf("In func1 x = %d\n", x);
}

void func2(void)
{
	x = x + 20;
	printf("In func2 x = %d\n", x);
	x = x + 15;
	printf("In func2 x = %d\n", x);
}