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= "hello";
int n;
while(cin >> str >> n) {
string ss= str.substr(0, n);
cout << ss <<endl;
}
}
// 64 位输出请用 printf("%lld")
