How to print the first word of a string

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The title says it all
How can i print the first word of a string

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Nothing, don't know The title
Just need some help here

Posted 11-Nov-18 0:30am

Member 14050941

Updated 11-Nov-18 11:02am

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OriginalGriff · Answer 1 · 2018-11-11T00:49:00

First, decide what makes a word "end"? It is a space? Well yes - but the first word of this reply doesn't end with one, and neither does the last word of this sentence! Or this. (And this one doesn't start with a word.) 3 of the sentences in this paragraph don't!

So start by deciding what defines a "word": 'a sequence of upper- and / or lower- case letters that end with a non-alphabetic character'

With that sorted, parse your string: ignore anything that isn't a letter, then start your word. It's a word until you reach a non-letter character, and you can then print it.

Give it a try - this isn't difficult if you think about it for a few minutes.
Hint: start by writing a function that takes a character as a parameter, and returns true or false depending on if it's a "word character" or not.

CPallini · Answer 2 · 2018-11-11T11:02:00

It really depends on the exact definition of 'word' in your requirements. For simple scenarios a istringstream is just enough:

C++

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

int main()
{
  string str = "foo bar foobar";
  istringstream iss(str);
  string first_word;
  iss >> first_word;
  cout << "first word of '" << str << "' is '" << first_word << "'" << endl;
}

How to print the first word of a string

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