#include <stdio.h>int main(){ int var1; printf("請輸入整數 =>"); scanf("%d", &var1); var1 = var1 + 20; printf("變數值 = %d" , var1); return 0;}int pinSw = 9;int SwSt = 0;void setup(){ Serial.begin(9600); pinMode(pinSw, INPUT); }void loop(){ SwSt = digitalRead(pimSw); if (SwSt >= 10) { Serial.println("ON"); } else { Serial.println("OFF"); }}