#include<iostream>
#include <string>
#include<cstdio>
using namespace std;
int main()
{
    long N;
    cin>>N;
    for(long i=0;i<N;++i)
    {
        string s;
        cin>>s;
        if(s[0]=='a'||s[0]=='e'||s[0]=='i'||s[0]=='o'||s[0]=='u')
            cout<<s<<"cow\n";
        else
            cout<<s.c_str()+1<<s[0]<<"ow\n";
    }
    while(1);
    
}

请哪位高手给我讲一下"s.c_str()+1"语句用到了些什么知识，表达的是什么意识呢？我是万分感激啊！！