This wont compile-

#include <iostream>
int main()
{
cout <<"Hello World\n";
return 0;
}


Get error " cout undeclared."


Thanks for any help in advance

Dave

#include <iostream>

using namespace std;

int main()
{
cout <<"Hello World\n";
return 0;
}

------------------
or
------------------

#include <iostream>
int main()
{
std::cout <<"Hello World\n";
return 0;
}

its a long time ago scince i have programmed something in C++,

but i think something like:

using namespace::std;

at the beginning of your programm should solve your problem........:-)

hope this helped

Sorry but using namespace std throws up even more errors.But thanks for thr help.

Dave

What's the error message? Did you use the semicolon?

Yes used semicolon get

dave@localhost dave]$ cd downloads
[dave@localhost downloads]$ gcc hello.cpp
/home/dave/tmp/cc7hxXjR.o(.text+0xd): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const'
/home/dave/tmp/cc7hxXjR.o(.text+0x60): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:perator[](unsigned int) const'
/home/dave/tmp/cc7hxXjR.o(.text+0x9d): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:perator[](unsigned int) const'
/home/dave/tmp/cc7hxXjR.o(.text+0xc8): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:perator[](unsigned int) const'
/home/dave/tmp/cc7hxXjR.o(.text+0x129): In function `main':
: undefined reference to `std::cout'
/home/dave/tmp/cc7hxXjR.o(.text+0x12e): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std:perator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/home/dave/tmp/cc7hxXjR.o(.text+0x15a): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `std::ios_base::Init::Init()'
/home/dave/tmp/cc7hxXjR.o(.text+0x189): In function `__tcf_0':
: undefined reference to `std::ios_base::Init::~Init()'
/home/dave/tmp/cc7hxXjR.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
[dave@localhost downloads]$



Thanks Dave

distro?
do you have libstdc++?

use the command g++ instead of gcc
g++ hello.cpp -o hello
then you can ./hello

g++ still the same but cout error only .Still looking for libstdc++.

Thanks
Dave

Use
using namespace std;
not
using namespace::std;

and compile it with
g++ -o hello hello.cpp

or with
gcc -o hello -lstdc++ hello.cpp

The code should be as follows,

to compile it you would do something like

Thanks to all I will try latest suggestions and report.

Cheers

Dave

Using
namespace std;
int main (void)
and compiling with g++ solved the problem.

Thanks to all again much appreciated.
All the best

Dave

Hi,

This code works fine on my system.

#include <iostream>
using namespace std;
int main()
{
cout<<"Hello World\n";
return 0;
}

I compiled it using g++.
You need to check the libraries if it doesn't work for u.

cheers,
Micky

Why did you reply to a thread that's 3 years old and no longer requires a solution?