I downloaded Dev C++ and wrote a program based on a YouTube tutorial video I was watching. None of the comments lead me to believe that there's anything wrong with this code or the user in general.

When I compile the code my AVG flags it as a Trojan virus and won't let me execute the file. So I turned it off and tried to compile and execute again. Nothing happens. When I click on the .exe file or try to run it from the Command Prompt it says I don't have permission to run the program. It's a simple program for crying out loud.

What am I doing wrong here?

Here's the code...

#include<iostream>
using namespace std;

int main(void)
{

double dnumber1 = 0.0;
double dnumber2 = 0.0;
double dnumber3 = 0.0;
double daverage = 0.0;

cout << "Please enter 3 numbers: " << endl;
cin >> dnumber1;
cin >> dnumber2;
cin >> dnumber3;

daverage = (dnumber1 + dnumber2 + dnumber3) / 3;

cout << "The average of the numbers are: " << daverage << endl << endl;

system("pause");
return 0;

}

Well I did get the program working, but I'm a bit puzzled as to why or how.

The code above is exactly as the video has it typed out, but I removed one of the "endl" commands in line 19. Why does there need to be two when the program seems to work fine with only one? Also, why would it read as a virus with two?

Dont know anything about your virus but I do know that whoever tutorial you were watching that told you to write 2 endl's does not realize his typo. Basically you resetted and flushed the buffer twice so practically didnt execute nothing

Your computer is probably just in panic and since it cant understand the code it takes it for something else.

Also,
Yes it is an illegal instruction that you may not execute a .exe file. Based on Hacker protection. I used to hack. And for game hacking we would always have to crack the game hack shield with a hex decimal code, crack the c shell, and input a .dll file to the main source files of the game... hahahahahah what am i talking about?

hehehheheheeheheheheheh........

#include<iostream>
using namespace std;

int main(void)
{

double dnumber1 = 0.0;
double dnumber2 = 0.0;
double dnumber3 = 0.0;
double daverage = 0.0;

cout << "Please enter 3 numbers: " << endl;
cin >> dnumber1;
cin >> dnumber2;
cin >> dnumber3;

daverage = (dnumber1 + dnumber2 + dnumber3) / 3;

cout << "The average of the numbers are: " << daverage <<endl;

system("pause");
return 0;

}

"that's it"

and is not necessary to given varibles values like "double dnumber2 = 0.0;"
however its good

I'd say it's pretty necessary to get in the habit of initialising your declared variables.

Not necessarily...