Sentence 

A.First Edition

This is the first edition of my assignment and I don't think there will be any further edition

1。 Basic idea: Simply ask user to input a sentence ended with '.','!' or '?' and count the letters of each word

to give some statistic data for words.

2。 Program design: Quit simple.　

3。 Major function：



     A. int inputSentence()

	Major function for inputting and counting for letters and words. Noticed that the last ending mark will be excluded

	from counting. And a checking for empty input is a must, otherwise calculating will have dividing 0 error.

     B. int countWord(int& charNum)

	Simply counting, indicating ending by return -1.

	　

4。 Further improvement：

	A. No.

	

/*******************************************************
course: comp248
assignment no.2
section: X
instructor: Ms Leila Kosseim
program title: sentence
author: Qingzhe Huang
ID: 5037735
purpose of program: using program control
special points: the last word will exclude the ending mark '.','?','!'

*///////////////////////////////////////////////////////

#include <iostream>

//initializing number for minWord which means the max length of a word
const int MaxLength =100;
//initializing number for maxWord which means the min length of a word
const int MinLength = 0;

using namespace std;

//this will count each word for one sentence
int countWord(int& charNum);

//this will display result
void display(int wordCount, int minWord, int maxWord, int totalChar);

//this allows user input one complete sentence
int inputSentence();

int main()
{

	inputSentence();     //analyse sentence!

	return 0;
}

//this allows user input one complete sentence
int inputSentence()
{
	//record total number of character of sentence excluding last mark
	int totalChar=0,
		//record the number of char of longest word
		maxWord= MinLength,
		//record the number of char of shortest word
		minWord= MaxLength,
		//record number of words in sentence
		wordCount=0,
		//a temp variable for length of each word,passing as param
		tempCount =0,
		//testing the return value of function countWord
		test =0;

	cout<<"Please enter the sentence to analyse"
		<<"(ended with a '.', '?' or '!')"<<endl;

	while (true)
	{
		test = countWord(tempCount);  //continue test word
		totalChar += tempCount;  //inc total num of char in sentence
		if (tempCount!=0)   //this means there is a new word
		{
			wordCount++; //inc word number
			if (tempCount>maxWord)  //if found a longer word
			{
				maxWord = tempCount;  //update number of char of longest word
			}

			if (tempCount < minWord)//if found a shorter word
			{
				minWord = tempCount;//update num of char of shortest word
			}

		}
		if (test==-1)  //this means the end of sentence is reached and break
			break;
	}

	if (wordCount!=0) //must do this, otherwise, there will be 0 as divident
	{
		display(wordCount, minWord, maxWord, totalChar); //call sub to display
	}
	else
	{
		cout<<"\nYou have not input a single word!";
	}
	return wordCount;
}

//this will count each word for one sentence
int countWord(int& charNum)
{
	char ch;

	charNum =0;  //initialize

	cin.get(ch);
	while (ch!= '.'&& ch!='?'&&ch!='!'&&ch!=32)
	{
		charNum++;
		cin.get(ch);
	}
	if (ch==32)
	{
		return 1;//this means there is blank space after a word
	}			 //or simply a blank space itself
	else
	{
		return -1;  //this means it is ending mark terminates the loop
	}
}

//this will display result
void display(int wordCount, int minWord, int maxWord, int totalChar)
{
	cout<<"\nThere are "<<wordCount<<" words.";
	cout<<"\nThe longest word has "<<maxWord<<" characters.";
	cout<<"\nThe shortest word has "<<minWord<<" characters.";
	cout<<"\nThe average length is "<<(double)totalChar/wordCount
		<<" characters.";
}