Problem with vector of string with C++

Question

0.00/5 (No votes)

See more:

I wrote a program that reads a file, saves in a vector of string the words:
2

C++

int main()
{
	string parole[1000];
	string parola;
   int conteggio = 0;
   int n=0;
ifstream infile("C:\\Users\\Mio\\Desktop\\ciao.txt");
   if (!infile.good()){
      cout << "errore apertura file" << endl;
      return 0;
   }
   while ( infile >> parola )
    {
      parole[n]=parola;
      cout << parole[n]<<endl;
      n++;
   }  
      
  return 0;
}

I wrote:
string parole[1000];

but I don't know the lenght of parole, how can I write?

What I have tried:

maybe I must use pointer? I don't know how I can solve

Posted 25-Oct-19 6:15am

Member 14594285

Updated 25-Oct-19 11:28am

KarstenK

v3

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Answer 1 · 2019-10-25T11:29:00

Try

C++

#include <iostream>
#include <vector>
using namespace std;

int main()
{
  vector <string> vw;

  for(;;)
  {
    string word;
    cin >> word;
    if ( ! cin ) break;
    vw.push_back(word);
  }

  for (const auto & w : vw)
    cout << w << endl;

  cout << "no. oof words: " << vw.size() << endl;
}

To get the input from your text file, redirect the standard in, e.g.

showwords.exe < C:\Users\Mio\Desktop\ciao.txt

(assuming showwords.exe is the name of the executable).

KarstenK · Answer 2 · 2019-10-25T06:30:00

Solution 1

Your arent you a vector but a fixed array. Read this vector tutorial.

Your parole is a string. This class has a length() function.

tip: use a search machine and read the documentation ;-)

Posted 25-Oct-19 6:30am

KarstenK