Name of class and header is a convention, not a rule

MLed.cpp

@@ -1,97 +0,0 @@
-/*OOP in C++ example for LEDs */
-#include<iostream>
-#include<fstream>
-#include<string>
-#include<sstream>
-using namespace std;
-
-#define LED_PATH "/sys/class/leds/beaglebone:green:usr"
-
-class LED{
-private:
-  string path;
-  int number;
-  virtual void writeLED(string filename, string value);
-  virtual void removeTrigger();
-public:
-  LED(int number);
-  virtual void turnOn();
-  virtual void turnOff();
-  virtual void flash(string delayms);
-  virtual void outputState();
-  virtual ~LED();
-};
-
-LED::LED(int number){
-  this->number = number;
-  ostringstream s;
-  s << LED_PATH << number; // LED number to the Path
-  path = string(s.str()); // convert to string
-}
-
-void LED::writeLED(string filename, string value){
-  ofstream fs;
-  fs.open((path + filename).c_str());
-  fs << value;
-  fs.close();
-}
-
-void LED::removeTrigger(){
-  writeLED("/trigger", "none");
-}
-
-void LED::turnOn(){
-  cout << "Turning LED" << number << "on" << endl;
-  removeTrigger();
-  writeLED("/brightness", "1");
-}
-
-void LED::turnOff(){
-  cout << "Turning LED" << number << "off" << endl;
-  removeTrigger();
-  writeLED("/brightness", "0");
-}
-
-void LED::flash(string delayms ="50"){
-  cout << "Making LED" << number << "flash" << endl;
-  writeLED("/trigger", "timer");
-  writeLED("/delay_on", delayms);
-  writeLED("/delay_off", delayms);
-}
-
-void LED::outputState(){
-  ifstream fs;
-  fs.open((path + "/trigger").c_str());
-  string line;
-  while(getline(fs,line)) cout << line <<endl;
-  fs.close();
-}
-
-LED::~LED(){
-  cout << "!!Destroying the LED with path: " << path << endl;
-}
-
-int main(int argc, char* argv[]){
-  if(argc!=2){
-    cout << "The usage is main <command>" << endl;
-    cout << "<command> is on, off flash or status" << endl;
-    cout << "e.g. main on" << endl;
-  }
-  cout << "Starting program ..." << endl;
-  string cmd(argv[1]);
-  LED leds[4] = {LED(0), LED(1), LED(2), LED(3)};
-  for(int i=0; i<=3; i++){
-    if(cmd=="on")
-      leds[i].turnOn();
-    else if(cmd=="off")
-      leds[i].turnOff();
-    else if(cmd=="flash")
-      leds[i].flash("100");
-    else if(cmd=="status")
-      leds[i].outputState();
-    else
-      cout << "invalid command, please type main" << endl;
-  }
-  cout << "Program done, Thanks." << endl;
-  return 0;
-}

LED.cpp → led.cpp

@@ -1,5 +1,5 @@
 /*led.cpp*/
-#include"LED.h"
+#include"led.h"
 #include<iostream>
 #include<fstream>
 #include<string>

main.cpp

@@ -2,14 +2,14 @@
  Gerardo Marx April/20/2020
 g++ main.cpp -o main LED.cpp*/
 #include<string>
-#include"LED.h"
+#include"led.h"
 using namespace std;
 
 
 int main(int argc, char* argv[]){
   if(argc!=2){
-    cout << "The usage is main <command>" << endl;
-    cout << "<command> is on, off flash or status" << endl;
+    cout << "The usage is main mkLed" << endl;
+    cout << "mkLed is on, off flash or status" << endl;
     cout << "e.g. main on" << endl;
     return 2;
   }