题解 | #截取字符串#
https://www.nowcoder.com/practice/a30bbc1a0aca4c27b86dd88868de4a4a
#include<stdio.h>
#include<iostream>
#include<string>
using namespace std;
int main(){
string s,ans;
int k;
while(cin>>s>>k){
s.substr(0,k);
cout<<s.substr(0,k)<<endl;//substr()复制字符串
}
return 0;
}
#include<iostream>
#include<string>
using namespace std;
int main(){
string s,ans;
int k;
while(cin>>s>>k){
s.substr(0,k);
cout<<s.substr(0,k)<<endl;//substr()复制字符串
}
return 0;
}
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