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 *newstr = (char*)malloc(sizeof(char) * (30 - m));
    char *p = str;
    char *tmp = newstr;
    for(int i = 0; i < m - 1; i++) {
        p++;
    }
    while(*p != '\0') {
        *tmp = *p;
        tmp++;
        p++;
    }
    cout<<newstr<<endl;
    free(newstr);
    return 0;
}