I haven't found any good tutorials so I started experimenting. I wanted to make calculations with two BigNr by adding them in to editable text boxes. I got their input and tried to get a result from them in a variable called C. The only problem is that the program isn't adding the values to the variable or refuses to show it in the application. The functions used
#include <bits/stdc++.h>
using namespace std;
ofstream fout("txt.out");
typedef int BigNr[1001];
void Citire(BigNr A){
for(int i=A[0];i>=1;i--)
fout<<A[i];
}
void Convertire_string(BigNr A,string s){
for(int i = 1; i <=A[0]; i++)
s[i-1]=A[i];
}
void Initializare(BigNr A)
{
A[0] = 0;
}
void InitInt(BigNr A, unsigned int X)
{
A[0] = 0;
while (X)
{
A[++A[0]] = X % 10;
X /= 10;
}
}
void IntInit(BigNr A, unsigned int x){
int i=1;
for(;i<=A[0];i++)
x=x*10+A[i];
}
void InitBigNr(BigNr A, BigNr B)
{
for (int i = 0; i <= A[0]; i++)
B[i] = A[i];
}
void InitBigNr_String(BigNr A, string s)
{
int k = 0;
A[0] = s.size();
for(int i = s.size() - 1; i >= 0; i--)
A[++k] = s[i]-'0';
}
int Comparare(BigNr A, BigNr B)
{
while (A[0] && !A[A[0]]) A[0]--;
while (B[0] && !B[B[0]]) B[0]--;//se elimina eventualele 0 nesemnificatine (din fata primei cifre)
if (A[0] != B[0])
return A[0]<B[0] ? -1 : 1;
int i = A[0];
while (i && A[i] == B[i]) i--;
return A[i] < B[i] ? -1 : A[i] == B[i] ? 0 : 1;
}
void InmultireBigNr_Int(BigNr A, unsigned int X) /* A <- AX*/
{
int i;
unsigned int T = 0;
for (i = 1; i <= A[0]; ++i)
{
A[i] = A[i] * X + T;
T = A[i] / 10;
A[i] = A[i] % 10;
}
while (T) /* Cat timp exista transport */
{
A[++A[0]] = T%10;
T /= 10;
}
}
void Adunare(BigNr a, BigNr b, BigNr rez)
{
int t=0, maxi; // t = cifra de transport *
if(a[0]<b[0])
{
maxi=b[0];
for(int i = a[0]+1; i<=maxi; i++) //adaugam 0-uri pana cand cele 2 numere au acelasi nr de cifre
a[i]=0;
}
else
{
maxi=a[0];
for(int i = b[0] + 1 ; i<=maxi; i++)
b[i]=0;
}
int i;
for(i=1;i<=maxi;i++)
{
int cifra = a[i] + b[i] + t;
rez[i]=cifra%10;
t=cifra/10; // cifra t o "tinem in minte"
}
if(t)
rez[i]=t;
else
i--;
rez[0]=i;
}
void Scadere(BigNr a, BigNr b, BigNr rez)
{
if(a[0]<b[0])
Scadere(b, a, rez);
else
{
int i, t=0;
for(i=1;i<=a[0];i++)
{
rez[i]=a[i]-b[i]+t;
if(rez[i]<0)
{
rez[i]=10+rez[i]; /* prin cifra t "imprumutam o zece" de la unitatea mai mare */
t=-1; // t se face -1 pentru a demonstra faptul ca am "imprumutat o zece"
}
else
t=0; //daca avem o scadere de genul 9-4, nu e nevoie sa imprumutam 10, deci t ramane 0
}
i--;
while(i && !rez[i]) // eliminam 0-urile ramase
i--;
rez[0]=i; //adaugam nr de cifre
}
}
void InmultireBigNr_BigNr(BigNr A,BigNr B,BigNr C){
int T=0;
C[0]=A[0]+B[0]-1;
for(int i=1;i<=A[0]+B[0];++i)
C[i]=0;
for(int i=1;i<=A[0];++i)
for(int j=1;j<=B[0];++j)
C[i + j - 1] += A[i] * B[j];
for(int i=1;i<=C[0];++i){
C[i]+=T;
T=C[i]/10;
C[i]%=10;
}
if(T)
C[++C[0]]=T;
}
int ImpartireBigNr_Scalar(BigNr A,int X){
int R=0;
for(int i=A[0];i;--i){
R=10*R+A[i];
A[i]=R/X;
R%=X;
}
while(!A[A[0]]&&A[0] > 1)
A[0]--;
return R;
}
int RestBigNr_Scalar(BigNr A,int X){
int R=0;
for(int i=A[0];i;--i)
R=(10*R+A[i])%X;
return R;
}
void ImpartireBigNr_BigNr(BigNr A,BigNr B,BigNr C,BigNr R){
C[0]=0;
int i;
while(Comparare(A,B)>=0){
Scadere(A,B,A);
if(C[0]==0)
C[0]=1;
C[1]++;
if(C[1]==10){
C[1]=0;
for(i=2;C[i]==9;i++)
C[i]=0;
C[i]++;
if(C[C[0]+1]!=0)
C[0]++;
}
}
InitBigNr(A,R);
}
And the program that runs the functions and the interface
#if defined(UNICODE) && !defined(_UNICODE)
#define _UNICODE
#elif defined(_UNICODE) && !defined(UNICODE)
#define UNICODE
#endif
#include <tchar.h>
#include <windows.h>
#include "bignr.h"
#define GET_INPUTA 0
#define ID_FILE_EXIT 1
#define GET_INPUTB 2
#define ADUNARE 3
#define SCADERE 4
#define INMULTIRE_BIGNR 5
#define INMULTIRE_SCALAR 6
#define IMPARTIRE_BIGNR 7
#define IMPARTIRE_SCALAR 8
#define RIDICARE_LA_PUTERE 9
#define AFISARE_APLICATIE 10
#define AFISARE_FISIER 11
typedef int BigNr[1001];
BigNr A,B,C,R;
int x,ok;
HWND hEdit,hEditb,hOut;
void CreateMainMenu(HWND hwnd){
HMENU hMenu= CreateMenu();
HMENU hFMItem = CreateMenu();
AppendMenu(hFMItem,MF_STRING,NULL,"New");
AppendMenu(hFMItem,MF_STRING,NULL,"Open");
AppendMenu(hFMItem,MF_STRING,ID_FILE_EXIT,"Exit");
AppendMenu(hMenu,MF_POPUP,(UINT_PTR)hFMItem,"File");
AppendMenu(hMenu,MF_STRING,NULL,"Edit");
AppendMenu(hMenu,MF_STRING,NULL,"Tools");
AppendMenu(hMenu,MF_STRING,NULL,"Help");
SetMenu(hwnd,hMenu);
}
void AddControls(HWND hwnd){
hEdit=CreateWindowW(L"Edit",L"",WS_VISIBLE | WS_CHILD | ES_MULTILINE | ES_AUTOVSCROLL, 200,152,100,50,hwnd,NULL,NULL,NULL);
hEditb=CreateWindowW(L"Edit",L"",WS_VISIBLE | WS_CHILD | ES_MULTILINE | ES_AUTOVSCROLL,400,152,100,50,hwnd,NULL,NULL,NULL);
hOut=CreateWindowW(L"Edit",L"",WS_VISIBLE | WS_CHILD | ES_MULTILINE | ES_AUTOVSCROLL, 200,300,300,200,hwnd,NULL,NULL,NULL);
CreateWindowW(L"Button",L"+",WS_VISIBLE | WS_CHILD, 310,120,30,30,hwnd,(HMENU)ADUNARE,NULL,NULL);
CreateWindowW(L"Button",L"-",WS_VISIBLE | WS_CHILD, 360,120,30,30,hwnd,(HMENU)SCADERE,NULL,NULL);
CreateWindowW(L"Button",L"X.BigNr",WS_VISIBLE | WS_CHILD, 310,160,30,30,hwnd,(HMENU)INMULTIRE_BIGNR,NULL,NULL);
CreateWindowW(L"Button",L"X.S",WS_VISIBLE | WS_CHILD, 360,160,30,30,hwnd,(HMENU)INMULTIRE_SCALAR,NULL,NULL);
CreateWindowW(L"Button",L"/.BigNr",WS_VISIBLE | WS_CHILD, 310,200,30,30,hwnd,(HMENU)IMPARTIRE_BIGNR,NULL,NULL);
CreateWindowW(L"Button",L"/.S",WS_VISIBLE | WS_CHILD, 360,200,30,30,hwnd,(HMENU)IMPARTIRE_SCALAR,NULL,NULL);
CreateWindowW(L"Button",L"x^y",WS_VISIBLE | WS_CHILD, 335,80,30,30,hwnd,(HMENU)RIDICARE_LA_PUTERE,NULL,NULL);
CreateWindowW(L"Button",L"afisare in aplicatie",WS_VISIBLE | WS_CHILD,550,137,140,30,hwnd,(HMENU)AFISARE_APLICATIE,NULL,NULL);
CreateWindowW(L"Button",L"afisare in fisier",WS_VISIBLE | WS_CHILD,550,177,140,30,hwnd,(HMENU)AFISARE_FISIER,NULL,NULL);
}
void ShowResult(){
}
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
TCHAR szClassName[ ] = _T("CodeBlocksWindowsApp");
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nCmdShow)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default colour as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
_T("Code::Blocks Template Windows App"), /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
900, /* The programs width */
600, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
CreateMainMenu(hwnd);
AddControls(hwnd);
/* Make the window visible on the screen */
ShowWindow (hwnd, nCmdShow);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) /* handle the messages */
{
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
case WM_COMMAND:
{
switch(LOWORD(wParam))
{
case ID_FILE_EXIT:{
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
}break;
case GET_INPUTA:{
wchar_t text[1002];
GetWindowTextW(hEdit, text, 1002);
wstring ws(text);
string str(ws.begin(), ws.end());
InitBigNr_String(A,str);
}break;
case GET_INPUTB:{
wchar_t txt[1002];
GetWindowTextW(hEditb, txt, 1002);
wstring ws(txt);
string strA(ws.begin(), ws.end());
InitBigNr_String(B,strA);
}break;
case ADUNARE:
Adunare(A,B,C);
break;
case SCADERE:
Scadere(A,B,C);
break;
case INMULTIRE_BIGNR:
InmultireBigNr_BigNr(A,B,C);
break;
case INMULTIRE_SCALAR:
IntInit(A,x);
InmultireBigNr_Int(A,x);
InitBigNr(A,C);
break;
case IMPARTIRE_BIGNR:
ImpartireBigNr_BigNr(A,B,C,R);
ok=1;
break;
case IMPARTIRE_SCALAR:
IntInit(A,x);
ImpartireBigNr_Scalar(A,x);
InitBigNr(A,C);
x=RestBigNr_Scalar(A,x);
ok=1;
break;
case AFISARE_APLICATIE:{
string s;
Convertire_string(C,s);
SetWindowText(hOut,s.c_str());
}break;
case AFISARE_FISIER:{
Citire(C);
if(ok==1)
fout<<endl<<"Rest= ";
Citire(R);
system("txt.out");
}break;
}
}break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
And here is the header which is not really important
#ifndef BIGNR_H_INCLUDED
#define BIGNR_H_INCLUDED
#include <bits/stdc++.h>
#include "bignr.cpp"
#endif // BIGNR_H_INCLUDED
