本题学习erase函数的用法

#include <iostream>
#include <cstring>

using namespace std;

string str[550];

int main(void)
{
    int cnt = 0;
    int max_cnt = 0;
    int idx = 0;
    while (cin >> str[cnt]) cnt++;
    str[cnt-1].erase(str[cnt-1].size() - 1);
    for (int i = 0; i < cnt; i++) {
        if (str[i].size() > max_cnt) {
            max_cnt = str[i].size();
            idx = i;
        }
    }

    cout << str[idx] << endl;

    return 0;
}