max.cpp

这个是我们学校用的VC++教案

/*#include<iostream.h>
int  x=1, y=2;
max(int  x , int  y)
{
	return  x>y ? x : y;
}
void  main()
{
	int  x=3;
	cout<<"max="<<max(x, y)<<'\n';
}*/
/*#include <iostream.h>
void  Myfun()
{
  	int  a=3;
	static  int  b =3;	
  	a++;
	b++;
	cout <<" a="<<a<<" , b="<<b<<endl;
}
void  main()
{
	Myfun();
	Myfun();
}*/
/*#include <iostream.h>
extern  int  a;
void  decrement(void)
{
	a+=10;

}
int  a=100;
int  main()
{
	for( ; a<=150 ; )
	{
		decrement();
		cout<<a<<endl;
	}
	return  0;
}*/
#include <iostream.h>
#include <stdlib.h>
#define  size  20
int  a;
//void  f1();
void  f1()
{
	extern int a;
	int sizeY=0;
	int *pa, *pb;
	a=a+size;
	sizeY=abs(a);
//	a=atoi("123456");
	cout<<a<<','<<::a<<'\n';
}

void  main()
{
	f1();
//	cout<<a<<','<<::a<<'\n';
}

extern int  a=200;