#include <stdio.h>
#include <stdlib.h>

//Read the text from the file
char* GetTextFromFile()
{
	FILE* pFile = NULL;
	long lSize = 0;
	char* buffer = NULL;
	size_t result = 0;
	
	pFile = fopen ( "text.in" , "rb" );
	if (pFile==NULL)
	{
		return NULL;
	}
	
	// obtain file size:
	fseek (pFile , 0 , SEEK_END);
	lSize = ftell (pFile);
	rewind (pFile);
	
	// allocate memory to contain the whole file:
	buffer = (char*) malloc (sizeof(char) * (lSize + 1));
	buffer[lSize] = 0; //mark the end of the string
	if (buffer == NULL)
	{
		return NULL;
	}
	
	// copy the file into the buffer:
	result = fread (buffer, 1, lSize, pFile);
	if (result != lSize) 
	{
		free(buffer);
		return NULL;
	}
	
	/* the whole file is now loaded in the memory buffer. */
	
	// terminate
	fclose (pFile);
	return buffer;
}

int isAlpha(char c)
{
	int a = ((c >= 'A') && (c <= 'Z')) || ((c >= 'a') && (c <= 'z'));
	return a;
}

int GetAverageWordLength(char* Text)
{
	int WordsCount = 0;
	int TotalWordsLength = 0;
	int Average = 0;
	
	int CrtPos = 1;
	
	if (Text == NULL)
		return 0;
	
	//Parse the string
	while (Text[CrtPos] != 0)
	{
		if (isAlpha(Text[CrtPos]))
		{
			TotalWordsLength++;
			if (!isAlpha(Text[CrtPos-1]))
				WordsCount++;
		}
		CrtPos++;
	}
	
	if (isAlpha(Text[0]))
	{
		TotalWordsLength++;
		WordsCount++;
	}
	
	Average = ((WordsCount > 0) ? (TotalWordsLength / WordsCount) : 0);
	
	return Average;
}


int main()
{
	FILE* fOutput = NULL;
	char* pText = NULL;
	int AverageWordLength = 0;
	
	pText = GetTextFromFile();
	if (pText != NULL)
	{
		AverageWordLength = GetAverageWordLength(pText);
	}
	
	fOutput = fopen("Text.out", "w");
	
	fprintf(fOutput, "%d", AverageWordLength);
	
	free(pText);
	fclose(fOutput);
	
	return 0;
}