题解 | #复制部分字符串#

#include <iostream>
using namespace std;

int main() {

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

    int m;
    cin >> m;
char *s = str;
string K = s+m-1;
  cout<<K;
    // write your code here......
    

    return 0;
}