really need help with string!!!!urgent!

[Ausha]

This programm counts words from input and then i have to print out the longest word, im i bit stuck on that, need to somehow loop trough all words and compare them, but thing is, that there can be whatever count of words and spaces, depends on input.

  #include<iostream>
#include<cstring>
using namespace std;
int main()

{
    string teikums;
    string b;
    int vardi, garums, position, nextposition;
    cout<<"uzraksti teikumu!\n";
    getline (cin,teikums);
    
    garums=teikums.length();
    vardi=1;
    
    for (int i=0; i<garums; i++) 
       {
        if (teikums[i]==' ') vardi++; 
        }
        cout<<"vardu skaits teikumaa: "<<vardi<<endl; 
  

      position=teikums.find(" "); 
      nextposition=teikums.find(" ", position+1); 
      if ((nextposition-position)>position) 
  
     
    
    system ("pause");
    return 0;
}

[keskiverto]

The stream operator >> skips whitespace by default. Read single words from teikums via std::stringstream.

How about "teikumu!"? How long is it? Punctuation is not whitespace, but it is not part of a word either, is it?

[Ausha]

"teikums" is just my string name, it can be indefinitely long, depends on input. in this task i only have to use white spaces, no punctuations, have to enter sentence only with white spaces.

[keskiverto]

What I did mean was: How long is this example word?

teikumu!?
123456789

7 or 9 characters? This time you leave it to the user to write proper input.

Pedantically, whitespace includes tabulators and newlines; not just space.


Look at http://www.cplusplus.com/reference/sstream/istringstream/istringstream/
The example has "stringvalues". You have "teikums".
The example converts words to int. You want std:string.
The example calculates and shows. You want max of string::size().

[Ausha]

teikums=string, teikums in my language=sentence,thats just how i named my string, yes its up to user, how long the string will be, the size is not defined.you have to enter the sentence that will be stored in "teikums"

[Ausha]

ah and there is another string b, which i was thinking to use as substr.

[Ausha]

in english might be easier to understand what i have here :)

 #include<iostream>
#include<cstring>
using namespace std;
int main()

{
    string sentence;
    string b;
    int words, len, position, nextposition;
    cout<<"Write a sentence!\n";
    getline (cin,sentence);
    
   len=sentence.length();
    words=1;
    
    for (int i=0; i<len; i++) 
       {
        if (sentence[i]==' ') words++; 
        }
        cout<<"There are this amount of words in a sentence: "<<words<<endl; 
  

      position=sentence.find(" "); 
      nextposition=sentence.find(" ", position+1); 
      if ((nextposition-position)>position) 
  
     
    
    system ("pause");
    return 0;
}

[keskiverto]

Did you read the example from the link?

Try::

getline( cin, teikums );
std::istringstream iss( teikums );
std::string vard;
while ( iss >> vard )
  {
    std::cout << "'" << vard << "' " << vard.size() << '\n';
  }

[Ausha]

this works,thanks, I did read the link, just im very much a beginner and dont really understand this function, as far as I understand is, istringstream copies my previous string teikums into new array and words are separated now, somehow i also have to make this display just the longest word

[keskiverto]

You obviously will print nothing during the loop. If you had an array of numbers, how would you find a maximum value? Same principle works here.