From 7e3cd4f91d5fd1c0d19953e3d0432e6d31cf6cbf Mon Sep 17 00:00:00 2001
From: Anthony Wang
Date: Thu, 22 Sep 2022 16:56:23 -0400
Subject: Start working on week4 (using goto!)

---
 week4/week4.ino | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 week4/week4.ino

diff --git a/week4/week4.ino b/week4/week4.ino
new file mode 100644
index 0000000..14acb28
--- /dev/null
+++ b/week4/week4.ino
@@ -0,0 +1,33 @@
+void setup() {
+	for (int i = 0; i < 8; ++i) pinMode(i, OUTPUT);
+	analogReadResolution(8);
+}
+
+void loop() {
+	int len = 0;
+	int seq[1000];
+	while (1) {
+		seq[len++] = random(0, 4);
+		for (int i = 0; i < len; ++i) {
+			digitalWrite(seq[i]<<1|1, HIGH);
+			delay(500);
+			digitalWrite(seq[i]<<1|1, LOW);
+			delay(500);
+		}
+		for (int i = 0; i < len; ++i) {
+			while (analogRead(A0) < 240 && analogRead(A1) < 240 && analogRead(A2) < 240 && analogRead(A3) < 240);	
+			for (int j = 0; j < 4; ++j)
+				if (analogRead(A0+j) > 240 && seq[i] != j) goto DONE; // Legit use case of goto to jump out of 2 loops
+			delay(500);
+		}
+		for (int i = 0; i < 8; ++i) {
+			for (int j = 0; j < 4; ++j) digitalWrite(j<<1|1, i&1^1);
+			delay(100);
+		}
+	}
+	DONE:
+	for (int i = 0; i < 8; ++i) {
+		for (int j = 0; j < 4; ++j) digitalWrite(j<<1, i&1^1);
+		delay(100);
+	}
+}
-- 
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