指针基础1

extern const char str5[10];

int main ()
{
	const char str1[10]  = "";

	char str3[10];
	const char str4[10] = "";	//如果不是外部的则必须初始化

	//str5 = "";	//error
	const char str5[10] = "";		//外部的也得在这里做申明定义，否则找不到str5
	strcpy((char*)str5,"fldk");

	char* str6 = new char;
	str6 = "fsd";
	printf("%s\n", str6 );

	char* str7;	//指针可以不初始化，可是你也不知道他会指向那块内存，后边操作的时候可能会出问题
	//if(str7 == NULL) //error
	str7 = "str7";
	printf("%s\n", str7 );

	char* str8 = NULL;
	str8 = "str8";
	printf("%s\n", str8 );


	return(0);
}