Simple Calculator (API)

Do an ico file on your own.

#ifndef Calculator_h

#define Calculator_h

#include "Stack.h"
#include <iostream>
#include <string>

using namespace Std;

Class calculator{
Private
Stack<double> Nstack;
Stack<char> Ostack;
Public
Double A;
Calculator (): A (0) {};
~calculator () {};
void Clear ();
void Compute (char Opr);
void Gettwonumdouble (double &num1, double &num2);
void Gettwonumint (int &num1, int &num2);
void Cal (string);//Calculator Operation program
};

#endif

{{No_dependencies}}

Included files generated by Microsoft Visual C + +.
For resource.rc use
//
#define IDD_START 102
#define IDI_ICON1 103
#define IDC_BUTTON1 1000
#define IDC_BUTTON2 1001
#define IDC_BUTTON3 1002
#define IDC_BUTTON4 1003
#define IDC_BUTTON5 1004
#define IDC_BUTTON6 1005
#define IDC_BUTTON7 1006
#define IDC_BUTTON8 1007
#define IDC_BUTTON9 1008
#define IDC_BUTTON10 1009
#define IDC_BUTTON11 1010
#define IDC_BUTTON12 1011
#define IDC_BUTTON13 1012
#define IDC_BUTTON14 1013
#define IDC_BUTTON15 1014
#define IDC_BUTTON16 1015
#define IDC_BUTTON17 1016
#define IDC_BUTTON18 1017
#define IDC_LIST1 1018
#define IDC_BUTTON19 1019
#define IDC_BUTTON20 1020
#define IDC_BUTTON21 1021

Next default values for new objects
//
#ifdef apstudio_invoked
#ifndef Apstudio_readonly_symbols
#define _APS_NEXT_RESOURCE_VALUE 104
#define _aps_next_command_value 40003
#define _aps_next_control_value 1022
#define _APS_NEXT_SYMED_VALUE 101
#endif
#endif

#ifndef Stack_h
#define Stack_h

#include <cassert>
#include <iostream>
using namespace Std;

Template<typename T>class stack;//class declaration

Template<typename T>class node{
Private
T info;
node<t>*link;
Public
Node (T data = 0, Node<t>*next = NULL) {
info = data;
link = next;
}
Friend Class stack<t>;
};

Chain Stack class template, headless node linked list
Template<typename T>class stack{
Private
node<t>*top;//Stack Top pointer
Public
Stack () {top = NULL;}
~stack ();
void Push (const t&data);//Press Stack
T pop ();//Popup
T GetTop ();//Take the top element of the stack
void Makeempty ();//emptying stack
BOOL IsEmpty () {return top = = NULL;}
};

Template<typename T>stack<t>::~stack () {makeempty ();}

Template<typename t>void stack<t>::P ush (const t&data) {
top = new node<t> (data, top);
}

Template<typename t>void Stack<t>::makeempty () {
node<t>*temp;
while (top! = NULL) {
temp = top;
top = top->link;
Delete temp;
}
}

Template<typename t>t Stack<t>::P op () {
ASSERT (! IsEmpty ());
Node<t>*temp = top;
T data = temp->info;
top = top->link;//Drop stack top node
Delete temp;//release stack top node
Return data;//back to stack top data
}

Template<typename t>t Stack<t>::gettop () {
ASSERT (! IsEmpty ());
Return top->info;
}
#endif

#include <iostream>
#include <string>
#include <cmath>
#include <cstdlib>
#include <sstream>
#include "Calculator.h"
using namespace Std;

void Calculator::clear () {
Nstack.makeempty ();
Ostack.makeempty ();
}

void Calculator::gettwonumdouble (Double & Num1, double & Num2) {
NUM1 = Nstack.pop ();
Num2 = Nstack.pop ();
}

void Calculator::gettwonumint (int &num1, int &num2) {
NUM1 = Nstack.pop ();
Num2 = Nstack.pop ();
}

void Calculator::compute (char Opr) {
char Opr1 = OPR;
Double Num1, Num2;
int Num3, NUM4;
if (Opr! = ' = ' &&opr! = '% ') gettwonumdouble (NUM1, Num2);
else if (Opr! = ' = ') gettwonumint (Num3, NUM4);
Switch (OPR) {
Case ' + ': Nstack.push (Num2 + Num1); Break
Case '-': Nstack.push (NUM2-NUM1); Break
Case ' * ': Nstack.push (NUM2*NUM1); Break
Case '/': Nstack.push (NUM2/NUM1); Break
Case '% ': Nstack.push (NUM4%NUM3); Break
Case ' = ': a = Nstack.pop (); Break
}
}
void calculator::cal (String str) {
BOOL B1 = true;
bool B2 = true;
Char CH2, str2[50];
string str1 = str;
int K, j =-1;
Nstack.push (0);
for (k = 0; k <= (int) str.length ()-1; k++) {
if ((str1[k] >= ' 0 ' &&str1[k] <= ' 9 ') | | str1[k] = = '. ') {
j + +;
STR2[J] = str1[k];
}
else{
if (J >= 0) {
Str2[j + 1] = ' + ';
Nstack.push (Atof (str2));
j =-1;
}
Switch (Str1[k]) {
Case ' + ': Case '-':
while (! Ostack.isempty () && ostack.gettop ()! = ' (') {//************* note
CH2 = Ostack.pop ();
Compute (CH2);
}
Ostack.push (Str1[k]);
Break
Case ' * ': Case '/': Case '% ':
while (! Ostack.isempty () && b1&&ostack.gettop ()! = ' (') {
CH2 = Ostack.pop ();
if (CH2 = = ' * ' | | ch2 = = '/' | | ch2 = = '% ')
Compute (CH2);
else{
Ostack.push (CH2);
B1 = false;
}
}
Ostack.push (Str1[k]);
B1 = true;
Break
Case ' = ':
while (! Ostack.isempty ()) {
CH2 = Ostack.pop ();
Compute (CH2);
}
Compute (Str1[k]);
Break
Case ' (': Ostack. Push (Str1[k]); Break
Case ') ':
Char STR3 = Ostack.gettop ();
while (STR3! = ' (') {
STR3 = Ostack.pop ();
Compute (STR3);
STR3 = Ostack.gettop ();
}
Ostack.pop ();
Break
}
}
}
}

#include <iostream>
#include <string>
#include <sstream>
#include "Calculator.h"
using namespace Std;

#include <windows.h>
#include "resource.h"

Char buf1[20];

String doubletostring (double D) {
String str;
StringStream SS;
SS << D;
SS >> Str;
return str;
}

Main function, test, below is API
const char g_szclassname[] = "Mywindowclass";
Hbrush g_hbrbackground = CreateSolidBrush (RGB (0, 0, 0));

Char buf[100];
int i = 0;

BOOL CALLBACK Aboutdlgproc (HWND hwnd, UINT Message, WPARAM WPARAM, LPARAM LPARAM)
{
Switch (Message)
{
Case WM_INITDIALOG:
SendMessage (hwnd, Wm_seticon, Icon_small, (LPARAM) LoadIcon (GetModuleHandle (NULL), Makeintresource (Idi_icon1)));
SendMessage (hwnd, Wm_seticon, Icon_big, (LPARAM) LoadIcon (GetModuleHandle (NULL), Makeintresource (Idi_icon1)));
Case WM_CTLCOLORDLG:
Return (LONG) G_hbrbackground;
Case wm_ctlcolorstatic:{
HDC hdcstatic = (hdc) WParam;
SetTextColor (hdcstatic, RGB (255, 255, 255));
SetBkMode (hdcstatic, TRANSPARENT);
Return (LONG) G_hbrbackground;
//}
Break
return TRUE;
Case WM_COMMAND:
Switch (LOWORD (wParam))
{
Case idc_button1:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 1 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button2:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 2 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button3:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 3 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button4:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 4 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button5:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 5 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button6:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 6 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button7:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 7 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button8:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 8 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button9:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 9 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button10:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' 0 ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button11:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = '. ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button12:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' = ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
i = 0;
Calculator Calcul;
Calcul.cal (BUF);
String str1 = Doubletostring (CALCUL.A);
for (int i = 0; i< (int) str1.size (); i++) {
Buf1[i] = Str1[i];
}
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf1);
}
Break
Case idc_button13:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' + ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button14:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = '-';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button15:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' * ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button16:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = '/';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button17:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ' (';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button18:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = ') ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button19:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[i] = '% ';
Buf[++i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
Break
Case idc_button20:{
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
i = 0;
for (int i = 0; Buf[i]! = ' + '; i++) {
Buf[i] = ' + ';
}
}
Break
Case idc_button21:{
if (i > 0) {
SendDlgItemMessage (hwnd, IDC_LIST1, lb_resetcontent, 0, 0);
Buf[--i] = ' + ';
SendDlgItemMessage (hwnd, IDC_LIST1, lb_addstring, 0, (LPARAM) buf);
}
}
Break
}
Break
Case WM_CLOSE:
EndDialog (hwnd, 0);
Default
return FALSE;
}
return TRUE;
}

int WINAPI WinMain (hinstance hinstance, hinstance hprevinstance,lpstr lpcmdline, int ncmdshow)
{
Return DialogBox (HINSTANCE, Makeintresource (Idd_start), NULL, Aboutdlgproc);
}

Microsoft Visual C + + generated resource script.
//
#include "resource.h"

#define Apstudio_readonly_symbols
/////////////////////////////////////////////////////////////////////////////
//
Generated from the Textinclude 2 resource.
//
#ifndef __borlandc__
#include "Winres.h"
#endif

/////////////////////////////////////////////////////////////////////////////
#undef Apstudio_readonly_symbols

/////////////////////////////////////////////////////////////////////////////
Chinese (Simplified, China) resources

#if!defined (afx_resource_dll) | | Defined (AFX_TARG_CHS)
LANGUAGE Lang_chinese, sublang_chinese_simplified

/////////////////////////////////////////////////////////////////////////////
//
Icon
//

Icon with lowest ID value placed first to ensure application icon
Remains consistent on all systems.
Idi_icon1 ICON "E:\\cailu.ico"
#endif//Chinese (Simplified, China) resources
/////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////
English (United States) resources

#if!defined (afx_resource_dll) | | Defined (Afx_targ_enu)
LANGUAGE Lang_english, Sublang_english_us

#ifdef apstudio_invoked
/////////////////////////////////////////////////////////////////////////////
//
Textinclude
//

1 textinclude
BEGIN
"Resource.h\0"
END

2 Textinclude
BEGIN
"#ifndef __borlandc__\r\n"
"#include" "Winres.h" "\ r \ n"
"#endif \ r \ n"
"The"
END

3 Textinclude
BEGIN
"\ r \ n"
"The"
END

#endif//apstudio_invoked

/////////////////////////////////////////////////////////////////////////////
//
Dialog
//

Idd_start Dialogex 0, 0, 301, 160
STYLE Ds_setfont | Ds_modalframe | Ds_3dlook | Ws_minimizebox | Ws_popup | ws_caption | Ws_sysmenu
ExStyle Ws_ex_clientedge
CAPTION "My Calculator"
FONT 18, "Italic", 1, 0x0
BEGIN
Pushbutton "1", idc_button1,0,40,50,40
Pushbutton "2", idc_button2,0,80,50,40
Pushbutton "3", idc_button3,0,120,50,40
Pushbutton "4", idc_button4,50,40,50,40
Pushbutton "5", idc_button5,50,80,50,40
Pushbutton "6", idc_button6,50,120,50,40
Pushbutton "7", idc_button7,100,40,50,40
Pushbutton "8", idc_button8,100,80,50,40
Pushbutton "9", idc_button9,100,120,50,40
Pushbutton "0", idc_button10,150,40,50,40
Pushbutton ".", idc_button11,150,80,50,40
Pushbutton "=", idc_button12,150,120,50,40
Pushbutton "+", idc_button13,200,40,50,30
Pushbutton "-", idc_button14,200,70,50,30
Pushbutton "*", idc_button15,200,100,50,30
Pushbutton "/", idc_button16,200,130,50,30
Pushbutton "(", idc_button17,250,40,25,30
Pushbutton ")", idc_button18,276,40,25,30
Pushbutton "%", idc_button19,251,70,50,30
Pushbutton "Clear-all", idc_button20,251,100,50,30
Pushbutton "Clear-single", idc_button21,251,130,50,30
LISTBOX Idc_list1,0,0,400,40,lbs_nointegralheight | Lbs_extendedsel | Ws_vscroll | Ws_tabstop
END

/////////////////////////////////////////////////////////////////////////////
//
Designinfo
//

#ifdef apstudio_invoked
Guidelines Designinfo
BEGIN
Idd_start, DIALOG
BEGIN
END
END
#endif//apstudio_invoked

#endif//English (United States) resources
/////////////////////////////////////////////////////////////////////////////

#ifndef apstudio_invoked
/////////////////////////////////////////////////////////////////////////////
//
Generated from the Textinclude 3 resource.
//

/////////////////////////////////////////////////////////////////////////////
#endif//Not apstudio_invoked