Arduino code to make an led strip of 3 blink - arduino

Question

I have an arduino board with an led strip with 3 led plugged into pin 1. a picture of the wiring is below. this is the code I used to attempt to lightup the led, with no luck:
#include <Adafruit_NeoPixel.h>
#define PIN 1
Adafruit_NeoPixel strip = Adafruit_NeoPixel(3, PIN, NEO_KHZ800);
void setup() {
strip.begin();
strip.show();//Initialize all pixels to 'off'
strip.setbrightness(50);
forcint i=0; i<3;i++)
strip.setPixelColor(0,255,255,255);
strip.show();
}
void loop() {
for (int i=255;i>=0;i--){
lightColor(i,0,0);
delay(10);
i=i+2
}
}
any help will be aprecited, this is my first time using arduino

Answer 1

#include <Adafruit_NeoPixel.h>
#define PIN 13
Adafruit_NeoPixel strip = Adafruit_NeoPixel(3, PIN, NEO_KHZ800);
void setup() {
strip.begin();
strip.show();//Initialize all pixels to 'off'
strip.setbrightness(50);
strip.setPixelColor(0,255,255,255);
strip.show();
}
void loop() {
for (int i=255;i>=0;i--){
lightColor(i,0,0);
delay(10);
}
delay(500);
}
With this code, LED will decrease RED channel until 0, wait 0'5 seconds and repeat.
I change your setup function by deleting a malformed for loop. And in loop() I added a delay and removed i=i+2 bacause I didn't understand its function. And finally, you must use another pin because PIN 1 is for serial use.