2-12.txt

思路很清晰的c++课件。例子很简明

例2.12  局部变量起作用

#include <iostream.h>

int avar=10;		//全局变量avar

void main()
{
   int avar;		//局部变量avar
   avar=25;				//1
   cout<<"avar is "<<avar<<endl;	//2
}