Language: C++

#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <algorithm>
#include <cmath>
#include <cstring>
using namespace std;
int main()
{
    long long a,b;
    cin>>a>>b;
    if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
    cout<<"Negative";
    if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
    cout<<"Positive";
    if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
    cout<<"Zero";
    cout<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:18: error: expected primary-expression before '|' token
   12 |     if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
      |                  ^
a.cc:12:21: error: expected primary-expression before '>' token
   12 |     if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
      |                     ^
a.cc:12:22: error: expected primary-expression before '|' token
   12 |     if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
      |                      ^
a.cc:12:26: error: expected primary-expression before '||' token
   12 |     if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
      |                          ^~
a.cc:12:39: error: expected primary-expression before '|' token
   12 |     if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
      |                                       ^
a.cc:12:42: error: expected primary-expression before '>' token
   12 |     if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
      |                                          ^
a.cc:12:43: error: expected primary-expression before '|' token
   12 |     if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
      |                                           ^
a.cc:12:47: error: expected primary-expression before '||' token
   12 |     if(a<0&&b>0&&|a|>|b| || b<0&&a>0&&|b|>|a| || a<0&&b<0)
      |                                               ^~
a.cc:14:18: error: expected primary-expression before '|' token
   14 |     if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
      |                  ^
a.cc:14:21: error: expected primary-expression before '<' token
   14 |     if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
      |                     ^
a.cc:14:22: error: expected primary-expression before '|' token
   14 |     if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
      |                      ^
a.cc:14:26: error: expected primary-expression before '||' token
   14 |     if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
      |                          ^~
a.cc:14:39: error: expected primary-expression before '|' token
   14 |     if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
      |                                       ^
a.cc:14:42: error: expected primary-expression before '<' token
   14 |     if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
      |                                          ^
a.cc:14:43: error: expected primary-expression before '|' token
   14 |     if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
      |                                           ^
a.cc:14:47: error: expected primary-expression before '||' token
   14 |     if(a<0&&b>0&&|a|<|b| || b<0&&a>0&&|b|<|a| || a>0&&b>0)
      |                                               ^~
a.cc:16:18: error: expected primary-expression before '|' token
   16 |     if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
      |                  ^
a.cc:16:22: error: expected primary-expression before '=' token
   16 |     if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
      |                      ^
a.cc:16:23: error: expected primary-expression before '|' token
   16 |     if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
      |                       ^
a.cc:16:27: error: expected primary-expression before '||' token
   16 |     if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
      |                           ^~
a.cc:16:40: error: expected primary-expression before '|' token
   16 |     if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
      |                                        ^
a.cc:16:44: error: expected primary-expression before '=' token
   16 |     if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
      |                                            ^
a.cc:16:45: error: expected primary-expression before '|' token
   16 |     if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
      |                                             ^
a.cc:16:48: error: expected primary-expression before ')' token
   16 |     if(a<0&&b>0&&|a|==|b| || b<0&&a>0&&|b|==|a|)
      |                                                ^