SPO5

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345 + 55

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//’ > ! … P >.

//— • # ! # P « » # •.

char *gp_Str;

int _tmain(int argc, _TCHAR* argv[])

{

char szString[255] = "5*4-(345+55)"; double fResult;

fResult = Calculator(szString);

cout<< szString << " " << fResult << endl;

system("pause"); return 0;

}

/////////////////////////////////////////////////////////////////

//

// % # o.

// s – > , ! … P #

//#= … > # # # .

//‚ ># P > - double.

//

double Calculator(char *pString)

{

gp_Str = pString;

42

return Summation();

}

/////////////////////////////////////////////////////////////////

//

//c =# "(", ")" > ,

//! # # # ! # # # double.

//‚= # .

double GetItem(void)

{

double fResult;

//y , # # #= …

//! … ! … . ‚= > #

//# double.

//Πstrtod P #

//# #g #, = … = -

//#, # # P !# .

//‚ ! … > #,

//= # =#. " ƒ # =

//P > # >

double D = strtod(gp_Str, &gp_Str); return D;

}

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/////////////////////////////////////////////////////////////////

//

//‚= #= … P > • =?.

//‚ ># P > #=.

//

double Summation(void)

{

43

char cOperation;

double fResult = Multiplication(); // # •

//— > !# # + –

//! ? , # ! •

//#

while(*gp_Str == '+' || * gp_Str == '-')

{

//x !# • > # >

//! P >

cOperation = *gp_Str++; // # •

double product = Multiplication();

// ‚= … #= if(cOperation == '+')

fResult += product;

else

fResult -= product;

}

return fResult;

}

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BOOL CreateProcess(

LPCTSTR lpApplicationName,

LPTSTR lpCommandLine,

LPSECURITY_ATTRIBUTES lpProcessAttributes,

LPSECURITY_ATTRIBUTES lpThreadAttributes,

49

#include <windows.h> #include <iostream> #include <locale>

using namespace std;

void _tmain( int argc, TCHAR *argv[] )

{

setlocale(LC_CTYPE, "Russian_Russia.1251");

STARTUPINFO si;

PROCESS_INFORMATION pi;

// x =

ZeroMemory( &si, sizeof(si) ); si.cb = sizeof(si); ZeroMemory( &pi, sizeof(pi) );

if( argc != 2 )

{

cout << "f >, > ! \n"; system("pause");

return;

}

//! • .

cout << "cg CreateProcess (" << GetLastError() << ").\n";

system("pause");

}

//c… ! > # g ! • • ! •. WaitForSingleObject( pi.hProcess, INFINITE );

//x =# .

CloseHandle( pi.hProcess ); CloseHandle( pi.hThread ); system("pause");

}