题解 | #首字母大写#

#include<iostream>
#include<string>
using namespace std;
int main() {
    string str;
    getline(cin, str);
    str = " " + str + " ";
    for (int i = 1; i < str.length(); ++i) {
        if (str[i] >= 'a' && str[i] <= 'z' && (str[i - 1] == ' '||str[i-1]=='\t'||str[i-1]=='\n'||str[i-1]=='\r')) {
            str[i] = str[i] - 32;
        }
    }
    str.pop_back();
    str.erase(0, 1);
    cout << str << endl;
    return 0;
}