这教导人们一定要看题，要看题，元音包含了‘y’，完毕，要看题啊

#include 
     
      #include 
      
       #include 
       
        using namespace std;char buff[1001];int main(){    scanf("%s",buff);    for(int i=0;buff[i];i++){        buff[i]=tolower(buff[i]);        if(buff[i]=='a'||buff[i]=='o'||buff[i]=='i'||buff[i]=='e'||buff[i]=='u'||buff[i]=='y'){continue;}        else {            printf(".%c",buff[i]);        }    }    printf("\n");    return 0;}