题解 | #取近似值#
取近似值
https://www.nowcoder.com/practice/3ab09737afb645cc82c35d56a5ce802a
#include <iostream>
#include<sstream>
using namespace std;
int main() {
string x;
cin>>x;
stringstream geek(x);
double y;
geek>>y;
int ans=(int)y;
int a;
for(int i=0;i<x.length();i++){
if(x[i]=='.'){
a=x[i+1]-'0';
break;
}
}
if(a>=5){
ans++;
}
cout<<ans;
return 0;
}
// 64 位输出请用 printf("%lld")
