Code for Nonrecursive predictive parsing

                           /*in the name of Allah */
# include <list>
# include <deque>
# include <bitset>
# include <algorithm>
# include <functional>
# include <numeric>
# include <utility>
# include <sstream>
# include <iostream>
# include <iomanip>
# include <cstdio>
# include <cmath>
# include <cstdlib>
# include <ctime>
# include <set>
# include <map>
# include <cmath>
# include <queue>
# include <limits>
# include <stack>
# include <vector>
# include <cstring>
# include <cstdio>
# include <fstream>
using namespace std;

# define MEM(array,w)   memset(array,w,sizeof array)
# define ULL unsigned long long
# define eps 1e-9
# define SS stringstream
# define FOR(i, a, b) for (int i=a; i<b; i++)
# define REP(i, a) FOR(i, 0, a)
# define rive(s) reverse(s.begin(),s.end())
# define PII pair<int , int>
# define MPSS map<string, string>
# define MPIS map<int, string>
# define MPSI map<string, int>
# define MPII map<int, int>
# define MPIC map<int,char>
# define MPCI map<char, int>
# define all(c) (c).begin(), (c).end()
# define VS vector<string>
# define VI vector<int>
# define VC vector<char>
# define VB vector<bool>
# define sz(x) x.size()
# define pb push_back
# define STI set<int>
# define STC set<char>
# define STS set<string>
# define OK(R,C) if(i<0 && j<0 && j==C && i==R)
# define MP make_pair

typedef pair<string,string> PCC;
string hasi=":-)";
string sad=":-(";
int main()
{
    int test,Ctest=0;
    int non, ter;

    cout<<"how many non terminal input? ";
    cin>>non;

    cout<<"Give the input:\n";
    string nn;
    VS VN;
    REP(i,non)
    {
        cin>>nn;
        VN.pb(nn);
    }

    cout<<"how many are terminal input? ";
    cin>>ter;

    cout<<"Give the input:\n";
    string mm;
    VS VT;
    REP(i,ter)
    {
        cin>>mm;
        VT.pb(mm);
    }

    map<PCC,string> mpc;
    map<PCC,string>::iterator it;

    cout<<"Make the grammer table below."<<endl;
    getchar();
    for(int i=0;i<non;i++)
    {
        for(int j=0;j<ter;j++)
        {
            string c;
            cout<<"Grammer for non-terminal input ("<<VN[i]<<") and terminal input ("<<VT[j]<<") is: ";
            getline(cin,c);
            mpc[MP(VN[i],VT[j])]=c;
        }
    }

    cout<<"Give the input string\n";
    string st;
    getline(cin,st);

    vector<string>input;

    stringstream io(st);
    string tt;
    while(io>>tt)input.pb(tt);

    int ssz=sz(st)+1;

    input.pb("$");

    string stk;
    stk+=(VN[0]);
    stk.pb('$');

    int i=0;

    while(!stk.empty())
    {
        string x;
        if(stk[1]!='\'')
        x=stk.substr(0,1);
        else x=stk.substr(0,2);

        string a=input[i];
        string sstk=stk.substr(stk.size()-1);
        sstk+=stk.substr(0,stk.size()-1);
        cout<<"Stack= "<<sstk<<"; ";

        int l=0;
        if(isalpha(x[l]) && islower(x[l]))
        {
            while(isalpha(x[l])&&islower(x[l]))l++;
            x=stk.substr(0,l+1);
        }

        for(int h=0;h<10-stk.size();h++)cout<<" ";
        cout<<"Input= ";
        int ssz2=0;
        for(int j=i;j<input.size();j++)
        {
            cout<<input[j];
            if(j<input.size()-1)cout<<" ";
            ssz2+=input[j].size();
        }
        cout<<";";

        if(find(all(VT),x)!=VT.end() || x=="$")
        {
            if(x==a)
            {
                stk.erase(0,x.size());
                i++;
            }
            else {cout<<"Not Accepted\n";return 0;}
        }
        else
        {
            bool paici=0;
            for(it =mpc.begin(); it != mpc.end(); it++)
            {
                string p=(*it).first.first;
                string q=(*it).first.second;
                string item=(*it).second;
                if(p==x && q==a)
                {
                    for(int lk=0;lk<(ssz-ssz2);lk++)cout<<" ";
                    cout<<"output: "<<p<<"->"<<item;
                    stk.erase(0,x.size());

                    if(item!="e")
                    stk.insert(0,item);

                    paici=1;
                }
            }
            if(paici==0){cout<<endl;REP(m,15)cout<<"~";cout<<sad;cout<<" Not Accepted ";cout<<sad;REP(m,15)cout<<"~";return 0;}
        }
        cout<<endl;
    }
    cout<<endl;REP(m,15)cout<<"~";cout<<hasi;cout<<" Accepted ";cout<<hasi;REP(m,15)cout<<"~";
    cout<<endl;

    return 0;
}