CPP Program to find words in a string

#include<iostream.h>

#include<conio.h>

class word

{ private:

          char s1[80];

  public:

          void wordcount();

          int wordend(char);

};

void word:: wordcount()

{        cout<<" Enter a line of text :";

          cin.getline(s1,80);

          int wordend(char);

          int i,count=1;

          for(i=0;s1[i]!='\0';i++)

          {        if((wordend(s1[i]))&&(!wordend(s1[i+1])))

                   count++;

          }

          cout<<" String contains "<<count<<" words.";

}

int wordend(char c)

{        switch (c)

          { case '.':

          case ';':

          case ',':

          case '\t':

          case ' ':return 1;

          default:return 0;

          }

}

void main()

{        clrscr();

          word w;

          w.wordcount();

          getch();

}