题解 | #首字母大写#

#include <iostream>
using namespace std;

int main() {
    string str;
    while (getline(cin, str)) {
        str = " " + str;
        for (int i = 0 ; i < str.size(); ++i) {
            if (str[i] == ' ' || str[i] == '\t' || str[i] == '\r' || str[i] == '\n') {
                if (str[i + 1] >= 'a' && str[i + 1] <= 'z') {
                    str[i + 1] = str[i + 1] - 32;
                }
            }
        }
        cout << str.substr(1, str.size() - 1) << endl;
    }
}