need help debugging character input.

[motubet]

I wrote a program that reads input a word at a time until a lone 'q' entered.The
program then report the number of words that began with vowels,the number that began with consonants,and the number that fit neither of those categories.

#include <iostream>
#include <cstdlib>

int main()
{
	char ch;
	bool cont = true; //for controlling the loop
	bool space = false; //see if there is a space in the input
    int i = 0; //checking if the input is the first word
	int consta, vowel, others;
	consta = vowel = others = 0;
	std::cout<<"Enter words (q to quit)\n";
	
	while (cont && std::cin>>ch) //continue while cont is true and the input succeded
	{
		if (i == 0) //check if this is the first word
		{
			if (isalpha(ch))
				if ((ch == 'a' ||ch == 'e' ||ch== 'i' ||ch== 'o' ||ch== 'u') || (ch == 'A' ||ch== 'E' ||ch== 'I' ||ch== 'O' ||ch== 'U'))
					++vowel;
				else
				    ++consta;
			else
				++others;
			++i; //add 1 to i so this if statement wont run again
		}
		

		if (space == true) //check if the last input was a space
		{
			if (!isspace(ch)) //check if the current input is not a space
			{
		     if (ch != 'q') //and ch is not 'q'
			 {
			if (isalpha(ch))
				if ((ch == 'a' ||ch == 'e' ||ch== 'i' ||ch== 'o' ||ch== 'u') || (ch == 'A' ||ch== 'E' ||ch== 'I' ||ch== 'O' ||ch== 'U'))
					++vowel;
				else
				    ++consta;
			else
				++others;

			space = false;
			}

			}
			else
				cont = false;
		}
		if (isspace(ch)) //check if ch is a space
			space = true;
	}

	std::cout<<"\n"<<consta<<" words beginnig with constants\n";
	std::cout<<vowel<<" words beginnig with vowels\n";
	std::cout<<others<<" words beginning with others\n";

	system("pause");
	return 0;
}

But it doesn't terminate when i input a space and a 'q'.
But if i in put '^Z' it does terminate but constantans are always 1 and the others are always 0.

[cire]

You are using the extraction operator which implies formatted extraction. Formatted extraction means whitespace will be skipped. Therefore line 50 will never evaluate to true.

Try replacing line 14 with:

while (cont && std::cin.get(ch)) //continue while cont is true and the input succeded

[motubet]

Thanks it works now.