understanding_scope_1.c


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#include <stdio.h>
#include "tutorial6.h"

//int a = 3;
//extern int a;


void func1(void)
{
    	extern int a;
   	a = 4;
    	{
        	extern int a;
        	a = 99;
        	{
        		extern int a;
        		printf("a is: %d\n",a);
        	}
    	}
}