arduinoでcast

概要

arduinoでstatic_cast、reinterpret_cast、dynamic_castやってみた。

環境

arduino ide ver 1.6.4
arduino uno

写真

サンプルコード

class Kitty {
public:
	int val = 0;
};
class Chobits : public Kitty {
public:
	int val = 1;
} obj ;

void setup()
{
	Serial.begin(115200);
	Serial.println("start");
	double d = 3.141592;
	float f = static_cast<double> (d);
	Serial.print("f => ");
	Serial.println(f);
	int n = static_cast<int> (d);
	Serial.print("n => ");
	Serial.println(n);
	long l = 42;
	short s = static_cast<short> (d);
	Serial.print("s => ");
	Serial.println(s);
	char c = static_cast<char> (d);
	Serial.print("c => ");
	Serial.println(c);
	unsigned int u1 = 137U;
	int n1 = static_cast<int> (u1);
	Serial.print("n1 => ");
	Serial.println(n1);
	int n2 = 139;
	unsigned int u2 = static_cast<unsigned int> (u1);
	Serial.print("u2 => ");
	Serial.println(u2);
	long lval = 200;
	int * i2 = reinterpret_cast<int *> (lval);
	Serial.print("i2 => ");
	Serial.println(* i2);
	Serial.print("obj.val => ");
	Serial.println(obj.val);
	Kitty * po = dynamic_cast<Kitty *> (&obj);
	Serial.print("po->val => ");
	Serial.println(po->val);
	Serial.println("end");
}
void loop()
{
}