```cpp
#include <bits/stdc++.h>
using namespace std;
int main(){
double a;
cin>>a;
cout<<(long long)a;
return 0;
}
```
@[Curry_Skyfxxker](/user/750706)
by Jackson_Miller @ 2022-07-25 20:43:25
其实不需要那么麻烦，无需if语句，只需：
```
#include<bits/stdc++.h>
using namespace std;
int main()
{
double a;//float a也可以
cin>>a;//输入
cout<<(long long)a<<endl;//输出
return 0;//结束
}
```
by cyh0412 @ 2022-07-25 20:45:30