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;
cin >> str;
int n;
cin >> n;
cout << str.substr(0,n) << endl;
return 0;
}
// 64 位输出请用 printf("%lld")