Word Counting Program

For a school project I have to write a program that reads inputs and when ended (using CTRL + D) outputs the line count, total words, character total, and unique lines.

For example, inputting:

hello

should output:

1 , 1, 5, 1 (1 line, 1 word, 5 characters, 1 unique line)


The problem is this: Currently my program is outputting all of these numbers correctly EXCEPT for the word count.

In my program the above would output:

1, 0 , 5, 1



Here is my code:

int main()
{
string input;
int i;                           //Used in FSM
int wordsperstring = 0;
int wordstotal= 0;
int charactertotal= 0;
int linecount= 0;
char c;							//Used in FSM
set <string> uniquewords;
set <string> uniquelines;
int state = 0;                  //Used in FSM



while (getline(cin, input))
{
uniquelines.insert(input);
linecount++;
charactertotal = charactertotal + input.size();

// FSM starts here:

for (i = 0; i < input.size(); i++)
{
c = input[i];

if (state == 0 && c != ' ' && c != '\t')
	state = 1;
	
else if (state == 1 && c != ' ' && c != '\t')
	state = 1;
	
else if (state == 1 && c == ' ' || c == '\t' || c == '\n')
	{
	state = 0;
	wordsperstring++;
	
	wordstotal = wordstotal + wordsperstring;
	
	}
}                                           

}



	

	
cout << linecount << "\t" << wordstotal << "\t" << charactertotal << "\t" << uniquelines.size() << "\t" << uniquewords.size() << endl;
	

	
	return 0;
}

Thanks in advance for your help. I am a beginner student so while there are easier ways of doing this, I'd prefer a fix that fits with my code.