Keyestudio ARDUINO maker learning kit, Руководство пользователя

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Sample program
Now, let's begin the compiling. When the button is pressed, the LED will be on. After the previous
study, the coding should be easy for you. In this program, we add a statement of judgment. Here,
we use an if () statement.
Arduino IDE is based on C language, so statements of C language such as while, switch etc. can
certainly be used for Arduino program.
When we press the button, pin 7 will output high level. We can program pin 11 to output high
level and turn on the LED. When pin 7 outputs low level, pin 11 also outputs low level and the
LED remains off.
//////////////////////////////////////////////////////////
int ledpin=11;// initialize pin 11
int inpin=7;// initialize pin 7
int val;// define val
void setup()
{
pinMode(ledpin,OUTPUT);// set LED pin as “output”
pinMode(inpin,INPUT);// set button pin as “input”
}
void loop()