//#include <stdio.h>
//int main()
//{	
//	printf("hello,bite");
//	return 0;
//}

//#include <stdio.h>
//int main()
//{
//	int a = 0;
//	a = 7*5;
//	a = a + 30;
//	printf ("%d\n",a);
//	
//	return 0;
//}
#include <stdio.h>
int global = 2023;//ȫֱ
int main() 
{
	int a;
	a = 3 + 7;
	printf("a=%d\n", a);
	 
	int b;
	b = 3 - 7;
	printf("b=%d\n", b);
	
	int c;
	c = 3 * 7;
	printf("c=%d\n", c);

	int d;
	d = 4 / 2;
	printf("d=%d\n", d);

	float f;
	f = 3.2/ 8;
	printf("f=%f\n", f);

	int e;
	e = 3 % 7;
	printf("e=%d\n", e);

	printf("g=%d\n", global);

	int h;
	h = 10;
	h +=3 ;
	printf("h=%d\n", h);

	int i=10;
	i -= 3;
	printf("i=%d\n", i);
	
	//int j = 10;
	////int k = ++j;
	////printf("j=%d\n", j);
	////("k=%d\n", k);
	//int l = j++;
	//printf("j=%d\n", j);
	//printf("l=%d\n", l);
	
	/*int j = 10;
	int k = j--;
	printf("j=%d\n", j);
	printf("k=%d\n", k);*/
	int j = 10;
	int k = --j;
	printf("j=%d\n", j);
	printf("k=%d\n", k);




	return 0;
	 
}