And my code is

#include "stdafx.h"

#include

using namespace std;

void main()

{

double D1(0);

double D2(0);

double D3(0);

char Operator;

const bool T(true), F(false);

do

{

cout << "Enter the first number:";

cin >> D1;

cout << "Please enter an operator (+ - * / or type X to exit or C to restart): " << endl;

cin >> Operator;

} while (Operator == 'C');

while (!F)

{

switch (Operator)

{

case '+':

cout << "Enter second number : ";

cin >> D2;

D3 = D1 + D2;

cout << D1 << " + " << D2 << " = " << D3 << endl;

T;

break;

case '-':

cout << "Enter second number : ";

cin >> D2;

D3 = D1 - D2;

cout << D1 << " - " << D1 << " = " << D3 << endl;

T;

break;

case '*':

cout << "Enter second number : ";

cin >> D2;

D3 = D1 * D2;

cout << D1 << " * " << D2 << " = " << D3 << endl;

T;

break;

case'/':

cout << "Enter second number : ";

cin >> D2;

if (D2 == 0)

{

cout << "Undefined answer(s). Enter new divisor.." << endl;

cin >> D2;

}

else D3 = D1 / D2;

cout << D1 << " / " << D2 << " = " << D3 << endl;

T;

break;

case 'C':

case 'c':

D1 = 0;

cout << " Enter first number ";

cin >> D1;

T;

break;

case 'X':

case 'x':

F;

exit(0);

break;

default:

F;

cout << "Invalid response " << Operator << " - Please enter a valid operation - Enter X to quit or enter C to clear" << endl;

}

}

D1 = D3;

cout << "Enter new operator" << endl;

}

Return operator is not working and letter C and X is not working

Please fix my problem.. Thank you

ASSIGNMENT: Modify Lab Five such that you use functions for each math calculation (Add, Subtract, Multiply, and Divide). Pass in parameters to each function for the values to use and the functions will return the result. Use a function to read in the numbers involved. These numbers will be doubles. Also write a function that reads in the operator and returns a boolean - true if the operator is valid, false if not valid. This function will have two parameters. First is a "C-type" string of characters containing the valid operators. The second is a reference parameter where the operator will be placed if the operator entered is valid.