單詞統計

 

#include <iostream>
using namespace std;
#include <map>
#include <string>
#define divisionline()  cout << "-----------------------------------------------------------------" <<endl
typedef struct tag_Count
{
	unsigned int count;
	float rate;
}WORDDATA;

void calcrate(map<string,WORDDATA> &wordcount)
{
	long long words = 0;
	for (map<string,WORDDATA>::iterator iter = wordcount.begin(); 
		iter != wordcount.end(); ++iter)
	{
		words += iter->second.count;
	}

	for (map<string,WORDDATA>::iterator iter = wordcount.begin(); 
		iter != wordcount.end(); ++iter)
	{
		iter->second.rate = iter->second.count/(float)words;
	}
}
void printanalyse(map<string,WORDDATA> wordcount)
{
	pair<string,WORDDATA> maxlength;
	pair<string,WORDDATA> maxcount;
	long long words = 0;
	for (map<string,WORDDATA>::iterator iter = wordcount.begin(); 
		iter != wordcount.end(); ++iter)
	{
		if (iter->first.length() > maxlength.first.length())
			maxlength = *iter;
		if (iter->second.count > maxcount.second.count)
			maxcount = *iter;
		words += iter->second.count;
	}
	cout << "Words total number is :" << endl << words << endl;
	cout << "The longest word is :" <<endl;
	cout << maxlength.first << " : " << maxlength.second.count << '\t' << maxlength.second.rate << endl;
	cout << "The most count of word is :" << endl;
	cout.width(maxlength.first.length());
	cout << maxcount.first << " : " << maxcount.second.count << '\t' << maxcount.second.rate << endl;
}
void printresult(map<string,WORDDATA> wordcount)
{
	unsigned int width = 0;
	for (map<string,WORDDATA>::iterator iter = wordcount.begin(); 
		iter != wordcount.end(); ++iter)
	{
		if (iter->first.length() > width)
			width = iter->first.length();
	}
	cout.width(width);
	cout << "word" << "   " << "couts" << '\t' << "rate" << endl;
	for (map<string,WORDDATA>::iterator iter = wordcount.begin(); 
		iter != wordcount.end(); ++iter)
	{
		cout.width(width);		
		cout << iter->first << " : " << iter->second.count << '\t' << iter->second.rate << endl;
	}
}

int getword(FILE **fp,int tch,string &temp)
{
	int ch;
	temp.clear();
	temp += tch;
	while (((ch = fgetc(*fp)) != EOF) && (isalpha(ch) || (ch == '-')))
		temp += ch;
	return ch;
}

int savecount(FILE **fp,int ch,map<string,WORDDATA> &wordcount)
{
	string temp;
	int res;
	res = getword(fp,ch,temp);
	map<string,WORDDATA>::iterator iter = wordcount.find(temp);
	if (iter != wordcount.end())
	{
		++iter->second.count;
	}
	else
	{
		WORDDATA wd;
		wd.count = 1;
		wd.rate = 0;
		wordcount.insert(make_pair(temp,wd));
	}
	return res;
}

int main(void)
{
	map<string,WORDDATA> word_count;
	string path;
	FILE* fp;
	int ch;
	cout << "Please input the full file path:"<< endl;
	divisionline();
	cin >>path;
	fp = fopen(path.c_str(),"r");
	if (fp == NULL)
	{
		cout << "Open file faild!" << endl;
		return 0;
	}
	
	while ((ch = fgetc(fp)) != EOF)
	{
		if (!isalpha(ch))
		{
			continue;
		}
		else
		{
			if (savecount(&fp,ch,word_count) == EOF)
				break;
		}
	}
	calcrate(word_count);
	divisionline();
	cout << "Show result:" << endl;
	printresult(word_count);
	divisionline();
	cout << "Analyse words:" << endl;
	printanalyse(word_count);
	divisionline();
	return 0;
}