error C2065: 'endl' : undeclared identifier-error C2065: 'end' : undeclared identifier

Question

I am new at C++ and I am having a little problem with Visual C++ 2005.

I type in this source code

#include <iostream>

int main()

{

int x = 5;

int y = 7;

std::cout << endl;

std::cout << x + y << " " << x * y;

std::cout << end;

return 0;

}

When I build my program I get two errors and those are

error C2065: 'endl' : undeclared identifier

error C2065: 'end' : undeclared identifier

What is the problem and how can I fix it?

 

Answer 1

try adding: std:: before both of your endl's (Oh and, check your typo on the 2nd endl =P)

#include <iostream> int main() { int x = 5; int y = 7; std::cout << std::endl; std::cout << x + y << " " << x * y; std::cout << std::endl; return 0; }

Answer 2

Or do the following:

#include <iostream>
using namespace std;

This will alleviate having to use std:: in all places.

Answer 3

Or you could do the following, which would alleviate having to qualify using std:: in all places:

#include <iostream>
using namespace std;

 

Answer 4

Hi,

the otherway is using name space std as follows

===========================

#include <iostream>

using namespace std; //Now , u don't need to use std:: any where .

int main()

{

int x = 5;

int y = 7;

cout << endl;

cout << x + y << " " << x * y;

cout << endl;

return 0;

}

==================

 

Thanx,

Ch.T.Gopi Kumar.

Answer 5

Thanks

Jhiither

Answer 6

Do you need to specify std namespace? i.e. std::endl ?

Giovanni

Answer 7

I can not use namespace end one it will not work I have tried declaring it tried it in differnt lines it will not work.

//The Author of the book sams C++ shows using end1 in this way. This is supposed to make it print on the next line. 

cout <<"Width: " << Width <<end1;

 

-------------------------------------------------------------------------------

// Demonstration of variables

#include

 

 

<iostream>

int

 

 

main()

{

 

 

using namespace std;

 

 

unsigned short int Width = 5, Length;

Length = 10;

 

 

// create an unsighed short and initialize with result

 

 

//of multiplying Width by Lengh

 

 

unsigned short int Area = (Width * Length);

cout <<

 

"Width: "<< Width ;

cout <<

 

"Length: " << Length ;

cout <<

 

"Area: " << Area << ;

cout << end1;

 

 

return 0;

}

 

>------ Rebuild All started: Project: listing 3.2, Configuration: Debug Win32 ------

1> Listing3.2.cpp

1>c:\users\jeff\documents\visual studio 2010\projects\listing 3.2\listing 3.2\listing3.2.cpp(17): error C2059: syntax error : ';'

1>c:\users\jeff\documents\visual studio 2010\projects\listing 3.2\listing 3.2\listing3.2.cpp(18): error C2065: 'end1' : undeclared identifier

 

 

---

Jeffery J. Hiither

Answer 8

It is not "end one" (end1) it is "end el" (endl).
Think of "end l(ine)".

- Wayne