hy i'm a noobie too i tried to make a calculator that imputs an ecuation
it is a consol program. i hope it can help you :)
ex: 3+5*564-342^33/22-(34343-(((34^4+2)-2-6))+4)=
the part of the cod i have finds any mitakes and puts the ecuation in a txt file.
( it is interactiv for ex: you type 3+* it tels you that you entered 2 operatos and it asks you if you want to continue with the ec. if you give " Y" it deletes the last operator and it continue to input from 3+)
here is the code
it is a consol program. i hope it can help you :)
ex: 3+5*564-342^33/22-(34343-(((34^4+2)-2-6))+4)=
the part of the cod i have finds any mitakes and puts the ecuation in a txt file.
( it is interactiv for ex: you type 3+* it tels you that you entered 2 operatos and it asks you if you want to continue with the ec. if you give " Y" it deletes the last operator and it continue to input from 3+)
here is the code
Code:
// david 2.cpp : Defines the entry point for the console application.
//
#include <iostream.h>
#include <conio.h>
#include "math.h"
#include "stdafx.h"
#include "david 2.h"
#include <fstream>
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// The one and only application object
CWinApp theApp;
using namespace std;
char expresie[1000];
int lungime_expresie;
int contin=1;
int putere_repetata=0;
int impartire_repetata=0;
ofstream expresie_1("expresie_1");
int intrare_gresita(int tip_eroare,char read_var_func)
{
int lungime_mesaj,retur;
retur=6;
switch(tip_eroare)
{case 0:{cout<<" ecuatia nu poate incepe cu "<<read_var_func<<" continuati? Y/N ";
lungime_mesaj=47;//cout<< lungime_mesaj;
break;
}
case 1:{cout<<" nu pot aparea 2 semne consecutiv "<<"' "<<read_var_func<<read_var_func<<" ' continuati? Y/N ";
lungime_mesaj=58;
break;
}
case 2:{cout<<" dupa '(' nu poate aparea ' "<<read_var_func<<" ' continuati? Y/N ";
lungime_mesaj=48;
break;
}
case 3:{cout<<" exprimare ambigua. folositi parantezele continuti? Y/N ";
lungime_mesaj=56;
break;
}
case 4:{cout<<" nu ati inchis toate parantezele continuati? Y/N ";
lungime_mesaj=49;
break;
}
case 5:{cout<<" "<<read_var_func<<" nu e recunoscut ca numar sau ca operatie continuati? Y/N ";
lungime_mesaj=60;
break;
}
case 6:{cout<<" ' ( ) ' nu se efectueaza nici o operatie continuati? Y/N ";
lungime_mesaj=59;
break;
}
case 7:{cout<<"dupa o operatie nu poate urma ')' continuati? Y/N ";
lungime_mesaj=50;
break;
}
case 8:{cout<<"nu exista nici o paranteza dechisa corespunzatoare continuati? Y/N ";
lungime_mesaj=67;
break;
}
}
//cout<<"\b\b\b\b";
char ch;
while(1){
ch = tolower(_gettch());
switch(ch)
{case 'y':{for(int u=lungime_mesaj;u>0;u--)
{cout<<"\b";}
for(int u=lungime_mesaj;u>0;u--)
{cout<<" ";}
for(int u=lungime_mesaj;u>0;u--)
{cout<<"\b";}
retur=1;
break;
}
case 'n':{retur=0;
break;
}
default:{1;}
}
if(retur!=6){return retur; break;}
}
}
int test_erori(char read_var_te,int nr_paranteze,int putere_repetata)
{int eroare_break=1;
if(!(strchr("0123456789+-*/^=()",read_var_te)) )
{if(!(read_var_te=(char)8))
{eroare_break=0;contin= intrare_gresita(5,read_var_te);//cout<<" eroare 5"; ///PRIMUL IF VERIFICA DACA CARACTERUL
}
}
if( (lungime_expresie==1) && (!(strchr("0123456789(",read_var_te)))) ///DACA ESTE PRIMUL CARACTER SI NU E CIFRA SAU
{eroare_break=0;contin = intrare_gresita(0,read_var_te);//cout<<"eroare 0";
}
if (lungime_expresie!=1)
{////////////////////////////
if( (strchr("+-*/^",read_var_te)) && (strchr("+-*/^",expresie[lungime_expresie-1])) )
{eroare_break=0;contin= intrare_gresita(1,read_var_te);/*cout<<" eroare 1";*/}
if( (expresie[lungime_expresie-1]=='(')&&(read_var_te==')') )
{eroare_break=0;contin=intrare_gresita(6,read_var_te);/*cout<<" eroare 6";*/}
if( (expresie[lungime_expresie-1]=='(') && (strchr("*/^",read_var_te)) )
{eroare_break=0;contin=intrare_gresita(2,read_var_te);/*cout<<" eroare 2";*/}
if ( (read_var_te=='=') && (nr_paranteze!=0) )
{eroare_break=0;contin=(intrare_gresita(4,read_var_te));/*cout<<" eroare 4";*/}
if( (read_var_te=='^') && (putere_repetata==1) )
{eroare_break=0;contin=intrare_gresita(3,read_var_te);/*cout<<" eroare 3";*/}
if( (strchr("+-*/^",expresie[lungime_expresie-1]))&&(read_var_te==')') )
{eroare_break=0;contin=intrare_gresita(7,read_var_te);/*cout<<" eroare 7";*/}
if( (nr_paranteze==0)&& (read_var_te==')'))
{eroare_break=0;contin=intrare_gresita(8,read_var_te);/*cout<<" eroare 8";*/}
if( (read_var_te=='/')&& (impartire_repetata==1))
{eroare_break=0;contin=intrare_gresita(3,read_var_te);/*cout<<" eroare 3";*/}
}
return eroare_break;
}
int citire_puteri(char read_var)
{ //cout<<" ggg "<<read_var<<" dss "<<putere_repetata<<" cc ";
if( (read_var=='^') && (putere_repetata==0) )
{putere_repetata=1;
expresie[lungime_expresie]='^'; expresie_1<<'^';
lungime_expresie++;cout<<"^";
return 1;
}
if( (!strchr("0123456789",read_var)) && (putere_repetata==1) )
{putere_repetata=0;return 0;
}
return 0;
}
int citire_impartire(char read_var)
{ //cout<<" ggg "<<read_var<<" dss "<<putere_repetata<<" cc ";
if( (read_var=='/') && (impartire_repetata==0) )
{impartire_repetata=1;
expresie[lungime_expresie]='/'; expresie_1<<'/';
lungime_expresie++;cout<<"/";
return 1;
}
if( (!strchr("0123456789",read_var)) && (impartire_repetata==1) )
{impartire_repetata=0;return 0;
}
return 0;
}
int read_function(void)
{ expresie[0]='(';lungime_expresie=1; expresie_1<<(char)38<<" (";
//int eroare_break=1;
int nr_paranteze=0;
int retur=1;
//int putere_repetata=0;
char read_var;
while(2)
{//cout<<" "<<putere_repetata<<" ";
read_var=_gettch(); //CITESTE CARACTERUL INTRAODUS ////FARA ECOU
if(test_erori(read_var,nr_paranteze,putere_repetata))
{
if( !citire_puteri(read_var))
{
if( !citire_impartire(read_var))
{
if(read_var=='='){expresie[lungime_expresie]=')';expresie_1<<")="<<endl;expresie[lungime_expresie+1]='=';lungime_expresie+=2;cout<<"=";return 1;break;}
else{
if(read_var==(char)8){cout<<"\b \b";lungime_expresie--;}
else{
expresie[lungime_expresie]=read_var;
expresie_1<<read_var;
if(read_var=='('){nr_paranteze++;}
if(read_var==')'){nr_paranteze--;}
cout<<expresie[lungime_expresie];
lungime_expresie++;
}}
}}}
else { if(!contin) {break;}}
}return 1;
}
int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
int nRetCode = 0;
// initialize MFC and print and error on failure
if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0))
{
// TODO: change error code to suit your needs
_tprintf(_T("Fatal Error: MFC initialization failed\n"));
nRetCode = 1;
}
else
{int b;
cout<<"hg \n";
read_function();
cout<<"\n a iesit din functie";
for(int i=0;i<=lungime_expresie;i++)
cout<<expresie[i];
//expresie_1<<;
expresie_1.close();
cin>>b;
// TODO: code your application's behavior here.
}
return nRetCode;
}
Comment