#include <iostream> #include <string> #include <sstream> #include <cctype> using namespace std; int main() { int T; cin >> T; // 读取T之后的换行，避免getline读空行 cin.ignore(); for (int i = 0; i < T; ++i) { string line; getline(cin, line); stringstream ss(line); string word; string res; while (ss >> word) { // 取单词首字符转大写 char c = toupper(word[0]); res += c; } cout << res << endl; } return 0; }