1033-自定义函数之字符提取 语言：C++

解题思路:

注意事项:

参考代码:

#include<iostream>

#include<cstring>

using namespace std; 

string isY(string s)

{

string s1;

for(int i=0;i<s.size();i++)

  if(s[i]=='a' || s[i]=='e' || s[i]=='i' || s[i]=='o' || s[i]=='u')

    s1.push_back(s[i]);

return s1;

}

int main()

{

string s;

cin >>s;

cout <<isY(s) <<endl;

return 0;

}