Sign Up

Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.

Have an account? Sign In

Have an account? Sign In Now

Sign In

Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.

Sign Up Here

Forgot Password?

Don't have account, Sign Up Here

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Have an account? Sign In Now

You must login to ask question.(5)

Forgot Password?

Need An Account, Sign Up Here

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Sign InSign Up

ITtutoria

ITtutoria Logo ITtutoria Logo

ITtutoria Navigation

  • Python
  • Java
  • Reactjs
  • JavaScript
  • R
  • PySpark
  • MYSQL
  • Pandas
  • QA
  • C++
Ask A Question

Mobile menu

Close
Ask a Question
  • Home
  • Python
  • Science
  • Java
  • JavaScript
  • Reactjs
  • Nodejs
  • Tools
  • QA
Home/ Questions/Resolved the problem of the undefined reference to `std::cout'
Next
Answered
Otis Gagnon
  • 16
Otis Gagnon
Asked: May 18, 20222022-05-18T15:52:36+00:00 2022-05-18T15:52:36+00:00In: cpp

Resolved the problem of the undefined reference to `std::cout’

  • 16

. Advertisement .

..3..

. Advertisement .

..4..

As advised, I used some code samples in another forum, but it could not improve the problem. My question is the “undefined reference to `std::cout’” in cpp – How to solve it?

The command line is:

#include <iostream>
 using namespace std;
 
 int main()
 {
  cout << "Hola, moondo.\n";
 }
#include <iostream>
 
 int main()
 {
  std::cout << "Hola, moondo.\n";
 }

and the result:

gcc -c main.cpp gcc -o edit main.o main.o: In function `main':
 main.cpp:(.text+0xa): undefined reference to `std::cout'
 main.cpp:(.text+0xf): undefined reference to `std::basic_ostream<char,std::char_traits<char> >& std::operator<< <std::char_traits<char>>(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
 main.o: In function `__static_initialization_and_destruction_0(int,int)':
 main.cpp:(.text+0x3d): undefined reference to `std::ios_base::Init::Init()'
 main.cpp:(.text+0x4c): undefined reference to `std::ios_base::Init::~Init()' collect2: error: ld
 returned 1 exit status make: *** [qs] Error 1
gcc -c main.cpp gcc -o edit main.o main.o: In function `main':
 main.cpp:(.text+0xa): undefined reference to `std::cout'
 main.cpp:(.text+0xf): undefined reference to `std::basic_ostream<char,std::char_traits<char> >& std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char> >&, char const*)'
 main.o: In function `__static_initialization_and_destruction_0(int,int)': main.cpp:(.text+0x3d): undefined reference to `std::ios_base::Init::Init()'
 main.cpp:(.text+0x4c): undefined reference to `std::ios_base::Init::~Init()' collect2: error: ld
 returned 1 exit status make: *** [qs] Error 1

What does the message mean? Can you advise me to fix it? If you have other better answers, leave them in the answer box below.

undefined reference
  • 2 2 Answers
  • 86 Views
  • 0 Followers
  • 0
Answer
Share
  • Facebook
  • Report

2 Answers

  • Voted
  • Oldest
  • Recent
  • Random
  1. Best Answer
    hdtutoria Expert
    2022-06-10T02:12:37+00:00Added an answer on June 10, 2022 at 2:12 am

    The cause: I think the cause is that The C++ standard library contains cout, which requires explicit linking with -lstdc++ when using gcc; g++ automatically links the standard library.

    The solution: Compile the software using the following commands:

    g++ -Wall -Wextra -Werror -c main.cpp -o main.o
              ^^^^^^^^^^^^^^^^^^^^ <- When your code is compiled, you can use this command to get a list of all warnings.

    With gcc, (g++ should be preferred over gcc)

    gcc main.cpp -lstdc++ -o main.o
    • 9
    • Reply
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
      • Report
  2. Inès Colin
    2022-05-25T20:26:40+00:00Added an answer on May 25, 2022 at 8:26 pm

    Yes, g++ worked for me.

    g++ my_source_code.cpp
    • 19
    • Reply
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
      • Report

Leave an answer
Cancel reply

You must login to add an answer.

Forgot Password?

Need An Account, Sign Up Here

Sidebar

Ask A Question
  • How to Split String by space in C++
  • How To Convert A Pandas DataFrame Column To A List
  • How to Replace Multiple Characters in A String in Python?
  • How To Remove Special Characters From String Python

Explore

  • Home
  • Tutorial

Footer

ITtutoria

ITtutoria

This website is user friendly and will facilitate transferring knowledge. It would be useful for a self-initiated learning process.

@ ITTutoria Co Ltd.

Tutorial

  • Home
  • Python
  • Science
  • Java
  • JavaScript
  • Reactjs
  • Nodejs
  • Tools
  • QA

Legal Stuff

  • About Us
  • Terms of Use
  • Privacy Policy
  • Contact Us

DMCA.com Protection Status

Help

  • Knowledge Base
  • Support

Follow

© 2022 Ittutoria. All Rights Reserved.

Insert/edit link

Enter the destination URL

Or link to existing content

    No search term specified. Showing recent items. Search or use up and down arrow keys to select an item.