BOJ 28637 - Смена стиля [C++]

문제

링크

풀이

#include <iostream>
#include <string>
using namespace std;
 
void solve(void) {
  string s; cin >> s;
 
  string t = "";
  for (char c : s) {
    if ('A' <= c && c <= 'Z') {
      t += '_';
      t += c - 'A' + 'a';
    } else {
      t += c;
    }
  }
  if (t[0] == '_') t = t.substr(1);
 
  cout << t << "\n";
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  int n; cin >> n;
  while (n--) solve();
  return 0;
}