__Harry_Haiyun__ @ 2023-05-10 18:28:36
#include <iostream>
#include <math.h>
using namespace std;
int main()
{
double num;
cin >> num;
if (num >= 0) cout << floor(num);
else cout << ceil(num);
return 0;
}
by LiJoQiao @ 2023-05-10 18:37:20
直接定义一个longlong类型的变量赋值就行了。
by huangyifan1688 @ 2023-05-19 20:57:09
@Harry_Haiyun
#include<bits/stdc++.h>
using namespace std;
int main()
{
long long n;
cin>>n;
cout<<n;
}
by HackerLzh @ 2023-05-20 15:31:12
注意floor和ceil的返回值并不是整形,要强转,这题则是要强转成longlong