Cod sursa(job #2144903)

Utilizator dianamariaDiana Cataros dianamaria Data 26 februarie 2018 23:35:38
Problema Bool Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 2.23 kb
#include <fstream>
#include <iostream>
#include <cstring>
using namespace std;
ifstream in ("bool.in");
ofstream out ("bool.out");
const int N=1001;
char s[N],s1[6],s2[N];
int v[27],p,nr;

bool expresie();
bool termen();
bool factor();

bool expresie()
{
    bool sum=termen();
    while (s[p]=='|')
    {
        p++;
        sum=sum|termen();
    }
    return sum;
}

bool termen()
{
    bool sum=factor();
    while (s[p]=='&')
    {
        p++;
        sum=sum&factor();
    }
    return sum;
}

bool factor()
{
    bool semn=0,val;
    while (s[p]=='!')
    {
        p++;
        semn=!semn;
    }
    if (s[p]=='(')
    {
        p++;
        val=expresie();
        p++;
    }
    else
    {
        val=v[s[p]-'A'];
        p++;
    }
    if (semn)
        val=!val;
    return val;
}
int main()
{
    int n,i;
    in.getline(s,N);
    in>>n;
    in.get();
    nr=strlen(s);
    for (i=0;i<nr;i++)
    {
        if (s[i]==' ')
            strcpy(s2,s+i+1), strcpy(s+i,s2), i--;
        else
            if (isalpha(s[i]))
            {
                strncpy(s1,s+i,5);
                if (strcmp(s1,"FALSE")==0)
                    s[i]='f', strcpy(s2,s+i+5), strcpy(s+i+1,s2);
                else
                {
                    s1[4]=NULL;
                    if (strcmp(s1,"TRUE")==0)
                        s[i]='t', strcpy(s2,s+i+4), strcpy(s+i+1,s2);
                    else
                    {
                        s1[3]=NULL;
                        //out<<s1<<endl;
                        if (strcmp(s1,"NOT")==0)
                            s[i]='!', strcpy(s2,s+i+3), strcpy(s+i+1,s2);
                        if (strcmp(s1,"AND")==0)
                            s[i]='&', strcpy(s2,s+i+3), strcpy(s+i+1,s2);
                        s1[2]=NULL;
                        if (strcmp(s1,"OR")==0)
                            s[i]='|', strcpy(s2,s+i+2), strcpy(s+i+1,s2);
                        s1[1]=NULL;
                    }
                }
            }
    }
    //out<<s<<endl;
    for (i=0;i<n;i++)
    {
        char ch;
        in>>ch;
        v[ch-'A']=!v[ch-'A'];
        p=0;
        out<<expresie();
    }
    return 0;
}