How can i count the number of words in a string?

[SlenderMan]

I have to make it so it will say this phrase has 2 words or this phrase has 7 words. I'm guessing I might have to use a while statement?

#include <iostream>
#include <string>
#include <conio.h>
using namespace std;

int main()
{
	char response;
	int value = 0;
	char msg1[80] = "";
	char msg2[80] = "";

	do
	{
		cout << "Enter a phrase: ";			//get phrase one
		cin.getline(msg1, 80);

		cout << "\nEnter another phrase: ";	//get phrase two
		cin.getline(msg2, 80);

		cout << "\nPhrase \"" << msg1 << "\" has " << strlen(msg1) << " characters.";		//display amount of characters
		cout << "\n\nPhrase \"" << msg2 << "\" has " << strlen(msg2) << " characters.";

		value = strcmp(msg1, msg2);

		if(value == 0)
			cout << "\n\nIn C++, phrase \"" << msg1 << "\" is equal to the phrase \"" << msg2 << "\"";		//determine which phrase is greater
		else if(value > 0)
			cout << "\n\nIn C++, phrase \"" << msg1 << "\" is greater than the phrase \"" << msg2 << "\"";
		else if (value < 0)
			cout << "\n\nIn C++, phrase \"" << msg2 << "\" is greater than the phrase \"" << msg1 << "\"";
	
		cout << "\n\nPlay again(y/n)? ";
		cin >> response;
		toupper(response);

		while(response != 'Y' || response == 'N')
		{
			if(response == 'N')
			{
				cout << "\n\nprogram ends.";
				break;
			}
			cout << "\nEnter a valid option: ";
			cin >> response;
			toupper(response);
		}	
	}
	while(response == 'Y');

	_getch();
	return 0;
}

[vlad from moscow]

Let assume that you have a sentence that is stored in an object of type std::string

std::string s( "This is a sentence" );

then the number of words can be gotten the following way

std::istringstream is( s );

std::cout << "Number of words in the sentence is " 
          << std::distance( std::istream_iterator<std::string>( is ),
                            std::istream_iterator<std::string>() )
          << std:;endl;

[SlenderMan]

I have no idea whats going on in there. Im on my first semester of C++

[vlad from moscow]

Well, you can use standard function std::strtok, std::strspn, std::strcspn.
In fact it is enough to use std::strtok to count the number of words.

[SlenderMan]

From what im understanding (and I guess im wrong) was to try this which doesn't work. I'm lost.

std::strtok(msg1)

[giblit]

Use a loop and loop through each character then count all spaces and add one to it

[vlad from moscow]

You should read the description of the function before to use it.