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;

    // write your code here......
    char new_str[30] = { 0 };
    char *p = new_str;  // 指针初始化，指向新字符串
    for (int i = m - 1; i < sizeof(str); i ++) {
        *(p++) = *(str + i);
    }

    p = new_str;
    while (*p != '\0') {
        cout << *p++;
    }
    cout << endl;

    return 0;
}