判断有多少单词

#include <map>#include <iostream>#include <cstring>using namespace std;inline bool is_zm(char a){    if(a>='A'&&a<='Z')return true;    if(a>='a'&&a<='z')return true;    return false;}int main(){    string h;    map <string,int> biao;    int count=0;    while(cin>>h){        int flag=0;        for(int i=1;i<h.length();i++){            if(is_zm(h[i])){                flag=1;                break;            }        }        if(flag==1)        if(!biao[h])biao[h]=++count;            }    cout<<count<<endl;}