Логический калькулятор

#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;
 
string delete_spaces(string str)
{
string s="";
for (unsigned i=0; i<str.size(); ++i)
{
if (str[i]!=' ' && str[i]!='\t')
s+=str[i];
}
return s;
}
 
bool check(string str)
{
string s=delete_spaces(str);
 
if (s.size()==1 && s=="0")
return 0;
if (s.size()==1 && s=="1")
return 1;
if ((s.size()==2 && ((s[0]=='!')&&(s[1]=='0'))))
return 1;
if ((s.size()==2 && ((s[0]=='!')&&(s[1]=='1'))))
return 0;
int q=0;
bool det=false;
 
string s1, s2;
 
for (unsigned i=s.size()-1; i>=0; —i)
{
 
 
if (i==0 && (s[i]=='(') && q==1)
{
s.assign(s, 1, s.size()-2);
i=s.size()-1;
q=0;
}
if(i==0 && s[i]=='!' && q==0)
det=true;
if(det==true){
 
s.assign(s, 2, s.size()-3);
i=s.size()-2;
//return(!check(s1)&&!check(s2));
}
if (s[i]==')')
q+=1;
if (s[i]=='(')
q-=1;
 
if (q==0 && s[i]=='|')
{
s1.assign(s, 0, i);
s2.assign(s, i+1, s.size()-i-1);
 
if(s1.size()>2) return check(s1);
if(s2.size()>2) return check(s2);
 
if((s1[0]=='!')&&(s2[0]=='!'))
{if(s1.size()>2) return check(s1);
if(s2.size()>2) return check(s2);
if(s1[1]=='1')
s1="0";
else
s1="1";
if(s2[1]=='1')
s2="0";
else
s2="1";
}
 
if(s1[0]=='!')
{if(s1.size()>2) return check(s1);
if(s1[1]=='1')
s1="0";
else
s1="1";
}
 
if(s2[0]=='!')
{
if(s2.size()>2) return check(s2);
if(s2[1]=='1')
s2="0";
else
s2="1";
}
if(det==true) return(!(check(s1)||check(s2)));
return check(s1)||check(s2);
 
}
if (q==0 && s[i]=='&')
{
s1.assign(s, 0, i);
s2.assign(s, i+1, s.size()-i-1);
 
if((s1[0]=='!')&&(s2[0]=='!'))
{if(s1.size()>2) return check(s1);
if(s2.size()>2) return check(s2);
if(s1[1]=='1')
s1="0";
else
s1="1";
if(s2[1]=='1')
s2="0";
else
s2="1";
}
 
if(s1[0]=='!')
{if(s1.size()>2) return check(s1);
if(s1[1]=='1')
s1="0";
else
s1="1";
}
 
if(s2[0]=='!')
{
if(s2.size()>2) return check(s2);
if(s2[1]=='1')
s2="0";
else
s2="1";
}
if(det==true) return(!(check(s1)&&check(s2)));
return check(s1)&&check(s2);
}
/*if (q==0 && s[i]=='!')
{
if(s[i+1]==1)
{ 
s[i]=' ';
s[i+1]=0;
}
else {s[i+1]==1; s[i]=' ';}
s=delete_spaces(str);
}*/
}
 
}
 
int main()
{
int qwe=-1;
string s;
getline(cin,s);
qwe=check(s);
cout«check(s);
scanf("%d",qwe);
return 0;
}