题解 | #首字母大写#

#include <bits/stdc++.h>

using namespace std;

int main(){
	string s;
	while(getline(cin , s)){
		for (int i=0; i<s.size(); i++){
			if (i == 0 && s[i] >= 'a' && s[i] <= 'z'){
				s[i] = s[i] + 'A' - 'a';
			}
			if (s[i]=='\n' || s[i] == '\t' || s[i] == '\r' || s[i] == ' ' && i!=s.size()-1){
				if (s[i+1] >= 'a' && s[i] <= 'z') s[i+1] = s[i+1] +'A' - 'a';
			}
		}
		for (int i=0; i<s.size(); i++){
			cout << s[i];
		}
		
	}
	
	return 0;

}