单词个数

 #include <iostream>
#include "string.h"
using namespace std;
int main()
{
 int j=0;
 char a[100];
 cin.get(a,100);
 for(int i=0;i<100;i++)
 {
  if((a[i]<='z'&&a[i]>='a')||(a[i]<='Z'&&a[i]>='A')||(a[i]>='0'&&a[i]<='9'))
  {
   if(a[i+1]==','||a[i+1]=='.'||a[i+1]=='?'||a[i+1]=='!'||a[i+1]==';'||a[i+1]==' ')
   {
    j=j+1;
 
   }
  }
 
 }
 cout<<j<<endl;
}