题解 | #复制部分字符串#

#include <iostream>
#include <string>
using namespace std;

int main() {

    char str[30] = { 0 };
    cin.getline(str, sizeof(str));

    int m;
    cin >> m;
    char *prr = str;
    cout << prr+m-1<<endl;
    return 0;
}