Edit this calculator program by altering the file format from ASCII to binary. You should save all the contents of the structure array containing the calculations. Once user enters N to end the program, your program should then ask (with a Y/N) if the user wants to see the previous calculations. If user enters Y then retrieve all the calculations from the binary file and display all the calculations on display console. The display should have a number for each calculation in a separate line. For example:

1. 10 8 = 2
2. 24 / 5 = 4.8

Must use getline for calculation inputs.

Here is the code:

#include

#include

#include

using namespace std;

//Calculation struct with three variables, two operands and one operator

struct Calculation{

double f;

double r;

char o;

};

//calculate function, this function will be used for calculation

double calculate(double oprnd1, double oprnd2, char oprtr){

double result;

switch(oprtr){

case '+':

result = oprnd1+oprnd2;

break;

case '-':

result = oprnd1-oprnd2;

break;

case '*':

result = oprnd1*oprnd2;

break;

case '/':

result = oprnd1/oprnd2;

break;

}

return result;

}

double handleSign(double val,char ch){

switch (ch)

{

case '+':

return 1 * val;

case '-':

return (-1) * val;

default:

return val;

}

}

//takeUserChoice function, this function ask user if he/she wants to continue or exit

char takeUserChoice(){

char choice;

cout"do>

cin>>choice;

return choice;

}

//save calculation function, this function will store the three calculation in the file.

void saveCalculations(Calculation *arr){

ofstream MyFile;

MyFile.open("CalculatorOutput.txt",ios::app);

if(!MyFile){

cout"can't>

}else{

for(int i=0;i

int result = calculate(arr[i].f,arr[i].r,arr[i].o);//find the result of the calculation using calculate function

MyFile">">

}

}

}

//takeinput function, this function take calculation input from the user and store them in the passed array

void takeInput(Calculation *myCalculationArray){

fflush(stdin);//need to clear buffer when taking input using getline

int q = 0;

while(q

string inp=" ",="" first,="">

bool is_valid = true;

char symbol,num1Sign = '+',num2Sign = '+';

double c,num1 = 0,num2 = 0,decimal1 = 0, decimal2 = 0;

int decimalFound = 0,operatorfound = 0,dividend = 10;

cout"enter>

getline(cin,inp);//taking input

//here we filter the input string and extract both operands and operator

for(int i = 0; i();>

char ch = inp[i];

if(ch != '.' && (ch '9') && !(ch =='+'||ch =='-'||ch =='*'||ch =='/' || ch == ' ')){

is_valid=false;

}

if(decimalFound == 1 && (ch == '.'|| ch == ' ')){

is_valid=false;

}else if(decimalFound == 0 && ch == '.'){

decimalFound = 1;

}

else if(ch =='+'||ch =='-'||ch =='*'||ch =='/'){

if(i==0){

if(ch =='*'||ch =='/'){

is_valid=false;

}else{

num1Sign = ch;

}

}else if(operatorfound==1){

if(ch =='*'||ch =='/'||ch=='+'){

is_valid=false;

}else{

num2Sign = ch;

}

}else{

operatorfound=1;

decimalFound=0;

dividend = 10;

symbol = ch;

}

}else if(ch!=' '){

if(operatorfound==0){

if(decimalFound==0){

num1 = num1 * 10 + ch - '0';

}else{

float temp = ch-'0';

decimal1 = decimal1 + temp/dividend;

dividend*=10;

}

}else{

if(decimalFound==0){

num2 = num2 * 10 + ch - '0';

}else{

float temp = ch-'0';

decimal2 = decimal2 + temp/dividend;

dividend*=10;

}

}

}

if(operatorfound == 0 && decimal1){

decimalFound=0;

}else if(num2&&decimalFound==0&&ch==' '){

is_valid=true;

}

}

if(is_valid){

num1 = num1 + decimal1;

num2 = num2 + decimal2;

num1 = handleSign(num1,num1Sign);

num2 = handleSign(num2,num2Sign);

c = calculate(num1,num2,symbol);

cout">">">" ";>

myCalculationArray[q] = (Calculation){num1,num2,symbol};

q++;

}else{

cout"input>

}

fflush(stdin);//need to clear buffer when taking input using getline

}

}

int main(){

//declaring Claculation array of size 3;

Calculation myCalculationArray[3];

char userChoice;

takeInput(myCalculationArray);

saveCalculations(myCalculationArray);

userChoice = takeUserChoice();

//we will keep user in loop until he/she wants to exit.

while(true){

if(userChoice=='Y' || userChoice == 'y'){

takeInput(myCalculationArray);

saveCalculations(myCalculationArray);

}else if(userChoice=='N' || userChoice == 'n'){

cout"thank>

break;

}else{

cout"enter>

}

userChoice = takeUserChoice();

}

}