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/Amazing solutions for the undefined symbols for architecture x86_64 c++ error
Next
Answered
Beckett Rodriguez
  • 26
Beckett Rodriguez
Asked: May 18, 20222022-05-18T18:12:36+00:00 2022-05-18T18:12:36+00:00In: cpp

Amazing solutions for the undefined symbols for architecture x86_64 c++ error

  • 26

. Advertisement .

..3..

. Advertisement .

..4..

I get the error message:

Undefined symbols for architecture x86_64:
  "_num_steps(int, std::__1::vector<int, std::__1::allocator<int> >, std::__1::vector<std::__1::vector<int, std::__1::allocator<int> >, std::__1::allocator<std::__1::vector<int, std::__1::allocator<int> > > >, std::__1::vector<std::__1::vector<int, std::__1::allocator<int> >, std::__1::allocator<std::__1::vector<int, std::__1::allocator<int> > > >)", referenced from:
  num_steps(int, std::__1::vector<int, std::__1::allocator<int> >) in num_steps-FTVSiK.o
 ld: symbol(s) not found for architecture x86_64

Has anyone ever faced this problem? How to troubleshoot the “undefined symbols for architecture x86_64 c++.” The problem appears when I try to operate the following program:

#include <iostream>
 #include <vector>
 #include <string>
 #include <cmath>
 
 using namespace std;
 
 //prototypes
 void _num_steps(int amount, vector<int> possible_steps, vector<vector<int>> steps_list, vector<vector<int>> result);
 int sum(vector<int> steps_list);
 void num_steps(int amount, vector<int> possible_steps);
 //
 //
 // 
 
 
 void num_steps(int amount, vector<int> possible_steps) {
  vector<vector<int>> result;
  _num_steps(amount, possible_steps, {{}}, result);
  //print_result(result);
 }
 
 
 int sum(vector<int> steps_list) {
  int sum_of_steps(0);
  for (auto step: steps_list) {
  sum_of_steps += step;
  }
  return sum_of_steps;
 }
 
 void _num_steps(int amount, vector<int> possible_steps, vector<int> steps_list, vector<vector<int>> result) {
  if (sum(steps_list) == amount) {
  result.push_back(steps_list);
  return;
  } 
  else if (sum(steps_list) >= amount) {
  return; 
  }
  for (auto steps: possible_steps) {
  auto steps_list_copy = steps_list;
  steps_list_copy.push_back(steps);
  _num_steps(amount, possible_steps, steps_list_copy, result);
  }
  cout << "yeah" << endl;
  return;
 }
 
 
 int main(int argc, char* argv[]) {
  num_steps(5, {1, 2, 3});
  return 0;
 }
undefined symbols
  • 2 2 Answers
  • 75 Views
  • 0 Followers
  • 0
Answer
Share
  • Facebook
  • Report

2 Answers

  • Voted
  • Oldest
  • Recent
  • Random
  1. Best Answer
    dttutoria Expert
    2022-06-21T10:31:07+00:00Added an answer on June 21, 2022 at 10:31 am

    The cause: 

    Because the signatures of your forward declaration of _num steps and _num steps definition do not match, this causes a compiler error. It is not compatible with the type of steps_list.

    Solution: To fix the error “undefined symbols for architecture x86_64 c++”, replace the line in your prototype with:

    void _num_steps(int amount, vector<int> possible_steps, vector<int> steps_list, vector<vector<int>> result);
    • 0
    • Reply
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
      • Report
  2. Aaron Ferrand
    2022-05-25T20:44:13+00:00Added an answer on May 25, 2022 at 8:44 pm

    The arguments list for a function declaration must contain the same types as its definition.

    Yours don’t match.

    Declaration:

    void _num_steps(int amount, vector<int> possible_steps, vector<vector<int>> steps_list, vector<vector<int>> result);

    Definition:

    void _num_steps(int amount, vector<int> possible_steps, vector<int> steps_list, vector<vector<int>> result) { /* ... */ }
    • 23
    • 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.