#include <iostream> #include <string> using namespace std; int main() { int T; cin >> T; // 输入测试数据的个数 cin.ignore(); // 忽略换行符 while (T--) { string str; getline(cin, str); for (char &c : str) { if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') { c = toupper(c); } else { c = tolower(c); } } cout << str << endl; } return 0; }