Cod sursa(job #2058313)

Utilizator LauraNaduLaura Nadu LauraNadu Data 5 noiembrie 2017 14:28:36
Problema Bool Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 2.11 kb
#include<fstream>
#include<cstring>
using namespace std;
ifstream f("bool.in");
ofstream g("bool.out");
int n, i, j, p, x;
bool b[30];
char a[1000], c[100];
bool evaluare();
void paranteza(bool &k)
{
    if(a[p]=='(')
    {
        p++;
        k=evaluare();
        p++;
        while(a[p]==' ')
            p++;
    }
}
bool numar()
{
    int k=0;
    if(a[p]=='T' && a[p+1]=='R')
    {
        p+=4;
        return 1;
    }
    else if(a[p]=='F')
        {
            p+=5;
            return 0;
        }
        else if(a[p]>='A' && a[p]<='Z' && (a[p+1]<'A' || a[p+1]>'Z'))
        {
            int x=(int)a[p]-64;
            p++;
            return b[x];
        }
    /*while(a[p]==' ')
        p++;*/
}
bool NOT()
{
    bool k=0;
    while(a[p]=='N' && a[p+1]=='O')
    {
        p+=3;
        if(k==0)
            k=1;
        else k=0;
        while(a[p]==' ')
            p++;
    }
    paranteza(k);
    if(k==1)
        if(numar()==0)
            return 1;
        else return 0;
}
bool AND()
{
    bool k=NOT();
    while(a[p]=='A')
    {
        p+=3;
        while(a[p]==' ')
            p++;
        if(NOT()==0)// || r==0)
            k=0;
    }
    paranteza(k);
    if(k==1)
        if(numar()==0)
            return 0;
        else return 1;
}
bool OR()
{
    bool k=AND();
    while(a[p]=='O' && a[p+1]=='R')
    {
        p+=2;
        while(a[p]==' ')
            p++;
        if(AND()==1 || k==1)
            k=1;
        else k=0;
    }
    return k;
}
bool evaluare()
{
    while(a[p]==' ')
        p++;
    bool k=AND();
    paranteza(k);
    /*if(a[p]=='N')
        k=NOT();
    if(a[p]=='A')
        if(k==1)
            if(AND()==0)
                k=0;*/
    if(a[p]=='O')
        if(k==0)
            if(OR()==1)
                k=1;
    return k;
}
int main()
{
    f.get(a,1000);
    f>>n;
    for(i=0;i<n;i++)
        f>>c[i];
    for(i=0;i<n;i++)
    {
        x=c[i]-64;
        if(b[x]==1)
            b[x]=0;
        else b[x]=1;
        p=0;
        g<<evaluare();
    }
    return 0;
}