简易计算器（API）

自己做一个ico文件就行了

---

#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);//计算器运算程序
};

#endif

---

//{{NO_DEPENDENCIES}}

// Microsoft Visual C++ 生成的包含文件。
// 供 Resource.rc 使用
//
#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;//类声明

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>;
};

//链栈类模板，无头结点链表
template<typename T>class Stack{
private:
Node<T>*top;//栈顶指针
public:
Stack(){ top = NULL; }
~Stack();
void Push(const T&data);//压栈
T Pop();//弹出
T GetTop();//取栈顶元素
void MakeEmpty();//清空栈
bool IsEmpty(){ return top == NULL; }
};

template<typename T>Stack<T>::~Stack(){ MakeEmpty(); }

template<typename T>void Stack<T>::Push(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>::Pop(){
assert(!IsEmpty());
Node<T>*temp = top;
T data = temp->info;
top = top->link;//丢弃栈顶结点
delete temp;//释放栈顶结点
return data;//返回栈顶数据
}

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] = '\0';
Nstack.Push(atof(str2));
j = -1;
}
switch (str1[k]){
case'+':case'-':
while (!Ostack.IsEmpty() && Ostack.GetTop() != '('){//*************注意
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;
}

//主函数，测试,下面是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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] = '\0';
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] != '\0'; i++){
buf[i] = '\0';
}
}
break;
case IDC_BUTTON21:{
if (i > 0){
SendDlgItemMessage(hwnd, IDC_LIST1, LB_RESETCONTENT, 0, 0);
buf[--i] = '\0';
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

/////////////////////////////////////////////////////////////////////////////
// 中文(简体，中国) 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 // 中文(简体，中国) resources
/////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////
// 英语(美国) 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"
"\0"
END

3 TEXTINCLUDE
BEGIN
"\r\n"
"\0"
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, "楷体", 700, 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 // 英语(美国) resources
/////////////////////////////////////////////////////////////////////////////

#ifndef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 3 resource.
//

/////////////////////////////////////////////////////////////////////////////
#endif // not APSTUDIO_INVOKED