50分求助

liaozichun @ 2024-08-09 15:07:24

#include<bits/stdc++.h>
using namespace std;
double a;
int main(){
    cin>>a;
    if(a > 0){
        cout<<floor(a);
    }
    if(a < 0){
        cout<<ceil(a);
    }
    return 0;
}

by Greeper @ 2024-08-09 15:17:06

@liaozichun 可以直接输入整形变量

#include<bits/stdc++.h>
using namespace std;
int main()
{
    long long a;
    cin>>a;
    cout<<a;
    return 0;
}

求关，谢谢

by liaozichun @ 2024-08-09 15:21:13

@Greeper 感谢大佬

by AqrDAD @ 2024-08-09 15:31:50

求关

解释一下你的代码为什么错：

1. 需要开 long long，切记看清数据范围；

改后的代码：

#include<bits/stdc++.h>
using namespace std;
double a;
int main(){
    cin>>a;
    if(a > 0){
        cout<<(long long)floor(a);
    }
    if(a == 0) cout<<0;
    if(a < 0){
        cout<<(long long)ceil(a);
    }
    return 0;
}

by liaozichun @ 2024-08-09 15:49:58

@AqrDAD 感谢，关注了

by youthiscoming @ 2024-08-20 09:10:10

@liaozichun 十年oi一场空，不开long long见祖宗