al7_9.c

the examples of c codes.it is very easy,but the basic is important

/*案例代码文件名：AL7_9.C*/
/*功能：利用全局变量计算长方体的体积及三个面的面积*/
int s1,s2,s3;
int vs(int a,int b,int c)
     	{int v;
 	v=a*b*c;  s1=a*b;  s2=b*c;  s3=a*c;
	return  v;
      	}
main()
      	{int v,l,w,h;
	clrscr();
	printf("\ninput length,width and height： ");
	scanf("%d%d%d",&l,&w,&h);
	v=vs(l,w,h);
	printf("v=%d    s1=%d    s2=%d    s3=%d\n",v,s1,s2,s3);
	getch();
      	}