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")
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