题解 | #截取字符串#
截取字符串
https://www.nowcoder.com/practice/a30bbc1a0aca4c27b86dd88868de4a4a
#include <iostream> using namespace std; int main() { string str; int k; cin >> str; cin >> k; for (int i = 0; i < k; i++) { cout << str[i]; } } // 64 位输出请用 printf("%lld")