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#include<iostream>
using namespace std;
int main(){
    int a;
    cin>>a;
    if(a>0) cout<<"positive";
    else if(a==0) cout<<"zero";
    else cout<<"negative";
    return 0;
}

这道题挺简单的,就是它的V太像U了

#include<iostream>
using namespace std;
int main()
{
    int q;
    cin>>q;
    if(q>0) cout<<"positive";
    else if(q==0) cout<<"zero";
    else cout<<"negative";
    return 0;
}

Python

a = input()
c = len(a)
d = int(c)
if d >= 0 and a[:1] != '-':
    if d == '0':
        print('zero')
    else:
        print('positive')
else:
    print('negative')

#include <iostream>
using namespace std;

int main() {
	int n;
	cin>>n;
	if(n>0) {
		cout<<"positive";
	} else if(n==0) {
		cout<<"zero";
	} else {
		cout<<"negative";
	}
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin >> n;
    if (n > 0)
    {
        cout << "positive";
    }
    else if(n == 0)
    {
        cout << "zero";
    }
    else{
        cout << "negative";
    }
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
int n;
int main()
{
    cin >> n;
    if (n > 0)
        cout << "positive";
    else if (n == 0)
        cout << "zero";
    else
        cout << "negative";
    return 0;
}

```用三个if条件判断即可

#include <iostream>
using namespace std;
int main()
{
int n;
cin >> n;
if (n > 0)
cout << "positive";
if (n == 0)
cout << "zero";
if (n < 0)
cout << "negative";
return 0;
}