Cod sursa(job #312940)

Utilizator irene_mFMI Irina Iancu irene_m Data 7 mai 2009 15:54:42
Problema Bool Scor 20
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.25 kb
#include <fstream.h>
#include <string.h>
#include <stdlib.h>
#define MaxN 109
#define MaxS 1009
#define MaxC 300

char S[MaxS],sch[MaxN];
int N,var[MaxC],k;

int termen();
int factor();

void cit()
{
	ifstream fin("bool.in");
	fin.get(S,MaxS,'\n'); fin.get();
	fin>>N; fin.get();
	fin.get(sch,MaxN,'\n');
	fin.close();
}

int eval()
{
	int r=termen();
	while(S[k]=='O' && S[k+1]=='R')
	{
		k+=3;
		r=r or termen();
	}
	return r;
}

int termen()
{
	int r=factor();
	while(S[k]=='A' && S[k+1]=='N' && S[k+2]=='D')
	{
		k+=4;
		r=r and factor();
	}
	return r;
}
	
int factor()
{
	int r;
	if(S[k]=='(')
	{
		k++;
		r=eval();
		k++;
	}
	else
		if(S[k]=='N' && S[k+1]=='O' && S[k+2]=='T')
		{
			k+=4;
			r=!factor();
		} else
			if(S[k]=='T' && S[k+1]=='R' && S[k+2]=='U' && S[k+3]=='E')
			{
				k+=5;
				r=1;
			} else
				if(S[k]=='F' && S[k+1]=='A' && S[k+2]=='L' && S[k+3]=='S' && S[k+4]=='E')
				{
					k+=6;
					r=0;
				} else
				{
					r=var[S[k]-'A'];
					k+=2;
				}
	return r;
}

int main()
{
	cit();
	ofstream fout("bool.out");
	for(int i=0;i<N;i++)
	{
		if(var[sch[i]-'A']==0)
			var[sch[i]-'A']=1;
		else
			var[sch[i]-'A']=0;
		k=0;
		fout<<eval();
	}
	fout.close();
}