C语言清楚了解指针的使用

int main()
{
	char ch = 'w';
	char* pc = &ch;
	*pc = 'w';
	return 0;
}

int main()
{
const char* pstr = "hello bit.";//这里是把一个字符串放到pstr指针变量里了吗？
printf("%s\n", pstr);
return 0;
}

int main()
{
	char* pstr = "hello bit.";//这里是把一个字符串放到pstr指针变量里了吗？
	*pstr = 'w';
	printf("%s\n", pstr);
	return 0;
}

int main()
{
char str1[] = "hello world.";
char str2[] = "hello world.";
const char *str3 = "hello world.";
const char *str4 = "hello world.";
if(str1 ==str2)
printf("str1 and str2 are same\n");
else
printf("str1 and str2 are not same\n");
if(str3 ==str4)
printf("str3 and str4 are same\n");
else
printf("str3 and str4 are not same\n");
return 0;
}

int* arr1[10]; //整形指针的数组
char *arr2[4]; //一级字符指针的数组
char **arr3[5];//二级字符指针的数组

int main()
{
	int arr[10] = { 0 };
	printf("arr = %p\n", arr);
	printf("&arr= %p\n", &arr);
	printf("arr+1 = %p\n", arr + 1);
	printf("&arr+1= %p\n", &arr + 1);
	return 0;
}

void test()
{
printf("hehe\n");
}
int main()
{
printf("%p\n", test);
printf("%p\n", &test);
return 0;
}

void test()
{
	printf("hehe\n");
}
int main()
{
	printf("%p\n", test);
	printf("%p\n", &test);
	void (*p)() = test;
	(*p)();
	return 0;
}