Compilation problem

[fluture]

Hello, i am very noob at programing and i need help at this code:

#include<iostream>
using namespace std;
int main;
{
    int n, a=0, sum;
    do{cin>>n;}while(n<0);
    do{sum=sum+a; a=a+3;}while(a<n);
    cout<<sum;
    system("PAUSE");
    return 0;}

I have two errors at the line four.
4 C:\... expected unqualified-id before '{' token
4 C:\... expected `,' or `;' before '{' token

[28poGNh0]

This is what cause the errorint main; remplace it with
int main()

main is function all functions have parentecies
also to use system("something");
you should include <cstdlib>

however dont use it and use cin.get(); instead

[fluture]

thank you for this.. now i have remembered about it.. but unfortunely it still gives me the same errors..Can you think about something else? Thank you again for the "()"!

[28poGNh0]

can you show us this error ? copy it and paste it here

[firedraco]

You are not supposed to have a ; after a function if you are going to define it. Hence:

int main() {
   //stuff
}

Also, please try to use good indentation style, it will make things much clearer and easier to read. For example:

do {
   cin>>n;
} while(n<0);

[fluture]

Now it works... thank you firedraco and techno01 ..