文字列分類、出力文字列のアルファベット、数値、記号の個数

/*  
* Copyright (c) 2012,            
* All rights reserved.  
*       ：      
*     ：2012   11   17    
*      ：v1.0  
*  
*     ：                     
*     ：                         
*     ：                         
*     ： 
*     ：  
*/  

# include 
# include //  string  
# include //string         

using namespace std;

/*    */
int alphabet(string);   //      
int number(string);     //       
int punctuation(string);//        

int main()
{
	/*     */
	string str1;
	int ialphabet = 0;
	int inumber = 0;
	int ipunctuation = 0;

	/*     */
	cout << "please input strings:";
	cin  >> str1;

	/*        */
	ialphabet = alphabet(str1);
	inumber = number(str1);
	ipunctuation = punctuation(str1);

	/*  */
	cout << ialphabet
		 << " of alphabets,"
		 << inumber
		 << " of numbers,"
		 << ipunctuation
		 << " of punctuations.
";

	return 0;//main    
}

int alphabet(string str)/*     */
{
	int num = 0;

	for (string::size_type count = 0; count != str.size(); ++count)
	{
		if (isalpha(str[count]))//isalpha()  ：     ，  true，  false
		{
			++num;
		}
	}

	return num;
}

int number(string str)
{
	int num = 0;
	
	for (string::size_type count = 0; count != str.size(); ++count)
	{
		if (isdigit(str[count]))//isdigit()  :     ，  true，  false
		{
			++num;
		}
	}

	return num;
}

int punctuation(string str)
{
	int num = 0;

	for (string::size_type count = 0; count != str.size(); ++count)
	{
		if (ispunct(str[count]))//ispunct()  ：       ，  true，  false
		{
			++num;
		}
	}

	return num;
}