POJ 1951 Extra Krunch G++

#include <iostream>#include <cstring>//谢谢博友文章 using namespace std;int main(){string str;getline(cin,str);int hash[26];memset(hash,0,sizeof(hash));hash['A'-'A']=-1;hash['E'-'A']=-1;hash['I'-'A']=-1;hash['O'-'A']=-1;hash['U'-'A']=-1;int flag=0;//第一个字母不是空格 int kg=0;for(int i=0;i<str.size();i++){if((str[i]>='A')&&(str[i]<='Z')){if(hash[str[i]-'A']==0){if(kg==1){cout<<" ";kg=0;}cout<<str[i];hash[str[i]-'A']=1;flag=1;}}else if((str[i]==' ')&&(flag==1)){if((str[i+1]=='.')||(str[i+1]==',')||(str[i+1]=='?')){}else{kg=1;}}else if((str[i]=='.')||(str[i]==',')||(str[i]=='?')){cout<<str[i];}}return 0;}