Что? (оператор "," (запятая))

double *alpha = new double[n - 1];
        double *beta = new double[n - 1];
        double A, B, C, F, h_i, h_i1, z;
        alpha[0] = beta[0] = 0.;
        for (std::size_t i = 1; i < n - 1; ++i)
        {
                h_i = x[i] - x[i - 1], h_i1 = x[i + 1] - x[i];
                A = h_i;
                C = 2. * (h_i + h_i1);
                B = h_i1;
                F = 6. * ((y[i + 1] - y[i]) / h_i1 - (y[i] - y[i - 1]) / h_i);
                z = (A * alpha[i - 1] + C);
                alpha[i] = -B / z;
                beta[i] = (F - A * beta[i - 1]) / z;
        }

h_i = x[i] - x[i - 1], h_i1 = x[i + 1] - x[i];

int a =7;
while (b)
{
smthDo();
(a<0) ? (b= false, cout << "false == b. Cycle's terminated.") : (b = true);
}

//...
false;
return b=std::cout<<"...";
//...
b = false;
return std::cout<<"...";

// Simpletron.cpp : Defines the entry point for the console application.
//
 
#include "stdafx.h"
#include <iostream>
#include "conio.h"
#include <iomanip>
 
using namespace std;
 
int iInputInstruction();
 
void v_PrintMemory(int *);
 
int _tmain(int argc, _TCHAR* argv[])
{
    const int iSize = 100;
    bool b = true;
    int iMemoryStack[iSize]={};
    int iInstructionRegister;
    int iInstructionCounter = 0;
    int iOperationCode;
    int iOperator;
    int iAccamulator = 0;
    v_PrintMemory(iMemoryStack);
    while ( b )
    {
    iMemoryStack [iInstructionCounter] = iInputInstruction();
    iInstructionRegister = iMemoryStack [iInstructionCounter];
    iOperationCode = iInstructionRegister/100;
    iOperator = iInstructionRegister%100;
    switch (iOperationCode)
    {
    case 10:
        while ((!(cin >> iMemoryStack[iOperator])) || (iMemoryStack[iOperator]<-9999 || iMemoryStack[iOperator]>9999))
        {
            cin.clear();
            cin.ignore(50, '\n');
            cout << "Please enter right value!" << endl;
        }
        (iMemoryStack[iOperator] < 0) ? (b = false, cout << "The input've terminated"):(iAccamulator += iMemoryStack[iOperator]);
        break;
    case 11:
        cout << "Value in cell " << noshowpos << iOperator << " is: " << noshowpos << iMemoryStack[iOperator] << endl;
        break;
    case 20:
        iAccamulator = iMemoryStack[iOperator];
        break;
    case 21:
        iMemoryStack[iOperator] = iAccamulator;
        break;
    case 30:
        iAccamulator += iMemoryStack[iOperator];
        break;
    case 31:
        iAccamulator -= iMemoryStack[iOperator];
        break;
    case 32:
        iAccamulator *= iMemoryStack[iOperator];
        break;
    case 33:
        iAccamulator /= iMemoryStack[iOperator];
        break;
    case 40:
        iInstructionCounter = iOperator;
        break;
    case 41:
        if ( iAccamulator < 0 )
            iInstructionCounter = iOperator;
        break;
    case 42:
        if ( iAccamulator == 0 )
            iInstructionCounter = iOperator;
        break;
    case 43:
        b = false;
        cout << "*** Simpletron execution terminated ***" << endl;
        break;
    default:
        cout << "You've input insence Code!" << endl;
        break;
    }
    iInstructionCounter++;
    v_PrintMemory(iMemoryStack);
    }
    cout << iAccamulator;
    _getch();
    return 0;
}
 
int iInputInstruction()
{
    int I;
    while ((!(cin >> I)) || ((I<-9999 || I>-1000) && (I>9999 || I<1000)))
    {
        cin.clear();
        cin.ignore(50, '\n');
        cout << "Please enter right value!" << endl;
    }
    return I;
}
 
void v_PrintMemory(int *A)
{
    cout << "Memory:" << endl;
    for (int i = 0; i < 10; i++)
        cout << right << setw(7) << setfill(' ') << noshowpos << i;
    cout << endl;
    int j = 0;
    for (int i = 0; i < 100; i+=10)
    {
        cout << left << setw(2) << noshowpos << i;
        for (i+j; j < (i+10); j++)
            cout << right << setw(5) << showpos << setfill('0') << internal << A[j] << "  ";
        cout << endl;
    }
}

{  int A = 12;
    int B = 1211;
    (A<B) ? (B = 100, cout << "!!!") : (A = 100);
    _getch();
    return 0;
}

int B;
    int A=(6,B=8);
    bool c = true;
    cout << endl << B;
    while (B != 100)
    {
        cout << "qgkdf\n";
        (A<B) ? (c = 100, B=100, cout << "!!!") : (c = 100);
        A--;
    }

(static_cast<bool>(a = 100)