Im a noob with an easy question

**mark9510** · 01-01-2009

I have a program which is small and easy the code is

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 Is: " <<daverage <<endl; <<endl; //Problem is in this line
	
	system("pause");
	return 0;

}

that is a short easy program but I get the error saying
"19 expected primary-expression before '<<' token "

I am using Devc++ the newest beta version

**Codeplug** · 01-01-2009

Code tags on the first post! Very nice.

<<endl; <<endl;

Remove the red part.

gg

**mark9510** · 01-01-2009

Thanks for recognizing my code tags Its whats used everywhere on any forum

why does the other endl; have to be taken off doesn't that just make an extra line

**laserlight** · 01-01-2009

Originally Posted by mark9510

why does the other endl; have to be taken off doesn't that just make an extra line

The problem is that there is a terminating semi-colon sandwiched right there. If you want that second endl, then you should write:

Code:

cout << "The Average Of The Numbers Is: " << daverage << endl << endl;

**Elysia** · 01-01-2009

A new line is just endl, not endl;.
And every line (except for control statements) must end with a ;.

**audinue** · 01-01-2009

endl is just a variable/constant at all.

so putting a statement like

Code:

endl;

or

Code:

dnumber1;

Means nothing but error.

**sharkbate24** · 01-01-2009

Like codeplug said, it's this part:

Code:

<<endl; <<endl;

.

Basically, you only use the ';' after each line, not between functions on the same line

. Take off the first ';'.

Code:

<<endl << endl;

will work

.

Good luck!
Thanks.

**laserlight** · 01-01-2009

Originally Posted by audinue

endl is just a variable/constant at all.

Actually, std::endl is a function (template).

**mark9510** · 01-01-2009

Thanks alot for your help I now understand

**sharkbate24** · 01-01-2009

Originally Posted by mark9510

Thanks alot for your help I now understand

Great! No Problem

.

It does take quite a while to get used to, but once you're used to it, you'll be doing it automatically (like me

).
Also, I would recommend commenting your code. You don't really need to in a simple script like this one, but it's just a starting point so you can get used to it

.

Happy new year!

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