add some functionality to andGate class

src/andGate.cpp

@@ -0,0 +1,11 @@
+#include "andGate.h"
+
+using namespace std;
+
+andGate::andGate(wire* wire1 = nullptr, wire* wire2 = nullptr,
+		wire* wire3 = nullptr) : in1(wire1), in2(wire2), out(wire3) {}
+
+int andGate::evaluate(int evTime) {
+	int bool1 = in1 -> getValue();
+	return ( in1 -> getValue(evTime) ) && ( in2 -> getValue(evTime) );
+}

src/andGate.h

@@ -3,8 +3,9 @@
 
 class andGate : public gate {
 	public:
-		andGate(wire* wire1 = nullptr, wire* wire2 = nullptr, wire* wire3 = nullptr);
-		int evaluate();
+		andGate(wire* wire1 = nullptr, wire* wire2 = nullptr,
+			wire* wire3 = nullptr);
+		int evaluate(int evTime);
 };
 
 #endif // !AND

src/event.cpp

@@ -5,6 +5,7 @@ using namespace std;
 event::event(event, value, setTime, wire) : evNum(event), evValue(value),
 	evTime(setTime), wireNum(wire) {}
 
+// operator overload so that priority_queue will function correctly
 bool event::operator<(const event &e1, const event &e2) {
 	if(e1.evTime == e2.evTime) {
 		return e1.evNum > e2.evNum;

src/radec.cpp

@@ -23,7 +23,7 @@ int main() {
 	if(parseSuccess) {
 		// 2. Parse the vector file to initialize the simulation Queue with initial
 		//		Wire state (i.e., value) changes
-		queue e;
+		priority_queue< e;
 		parseSuccess = e.parseVector(fileName);
 
 	// 3. Simulate the circuit using Event-driven control