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#include <stdio.h>
int func(void)
{
	static int counter = 1;
	return ++counter;
}
int main()
{
	int anwser;
	anwser = func() - func()*func();
	printf("%d\n",anwser);
	getchar();
	return 0;
}
在func()函数内,我们定义了静态变量counter,初始化值为1.
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原文地址:http://blog.csdn.net/lolita0917/article/details/45726529