Question

Description

The purpose of this challenge is to use the IF statement to control program flow and to use basic arithmetic expressions. This challenge simulates a rudimentary stock chart.

Requirements

Take a glance at the Sample Interaction below to get an idea of how the code runs

Declare a double variable called previous_price

Declare a double variable called current_price

Declare a string variable called symbol

Declare a string variable called company

Ask the user to enter a value for symbol

Ask the user to enter a value for company

Ask the user to enter a value for previous_price

Ask the user to enter a value for current_price

If the price of the stock has increased, show a message “It’s a bull market”

If the price of the stock has decreased, show a message “It’s a bear market”

if the price of the stock didn’t change, show a message “It’s a flat market”

Also, as part of the message for steps 10 and 11, indicate the percentage change. (see below)

Hints

Include the <iomanip> header file. This will allow you to use various options to format your output

#include <iomanip>

It’s good practice to initialize variables to default values that make sense (for example, set fee to 0.00)

Include the code below before any other cout lines. The setprecision(x) will display your decimal output with x decimal places.

cout << fixed << setprecision(2);

Sample Interaction / Output

-- Welcome to CSUB Brokerage --

What is the stock symbol? GOOG

What is the company name? Google

What was the previous stock price? 850

What is the current price? 1000

It's a bull market! Google (GOOG) went up 17.65%

RUN IT AGAIN:

-- Welcome to CSUB Brokerage --

What is the stock symbol? GOOG

What is the company name? Google

What was the previous stock price? 850

What is the current price? 425

It's a bear market! Google (GOOG) went down 50.00%.

RUN IT AGAIN:

-- Welcome to CSUB Brokerage --

What is the stock symbol? GOOG

What is the company name? Google

What was the previous stock price? 850

What is the current price? 850

It's a flat market! Google (GOOG) stock price didn't change.

Answer 1

• The first part of the program declares the required variables and initializes them to their default values i.e.
  • string symbol
  • string company
  • double previous price
  • double current price
• After that we take the user input for all these values.
• Finally we reach the if-else conditions which are executed as follows:

if(condition A is true){
//run this}
else if(condition B is true){
//run this}
else if(condition C is true){
//run this}

First it checks if Condition A is true. If true it runs the code inside the curly braces and the program ends.

Only if 'A' is false it checks for Condition B to be true. If 'B' is true the code inside the curly braces of that condition is executed and the program ends.

If 'B' is also false it checks for Condition C to be true. If true it executes the code inside the curly braces and the program ends.

Note: In the code given below some of the output strings contain single quotes. You might have to type the single quotes again through your keyboard if they're not being displayed properly in the console window.

Please find attached the commented code below:

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
  
   /* declare the variables required in the program and initialize them to default values*/
   double previous_price = 0;
   double current_price = 0;
   double percentage = 0;
   string symbol;
   string company;
  
   /* Take the input from the user for 'symbol', 'company', 'previous_price', 'current_price'*/
   cout<<"--Welcome to CSUB Brokerage--"<<endl;
   cout<<"What is the stock symbol? ";
   cin>>symbol;
  
   cout<<"What is the company name? ";
   cin>>company;
  
   cout<<"What was the previous stock price? ";
   cin>>previous_price;
  
   cout<<"What is the current price? ";
   cin>>current_price;
  
   /*if the current price is greater then the previous price run this block of code*/
   if(current_price > previous_price){
       percentage = (current_price - previous_price)/previous_price*100;
       cout<<"It's a bull market! ";
       cout<<company << " (" << symbol << ") went up ";
       cout<<fixed<<setprecision(2)<<percentage<<"%";
   }
  
   /*if the current price is less than the previous price run this block of code*/
   else if(current_price < previous_price){
       percentage = (previous_price - current_price)/previous_price*100;
       cout<<"It's a bear market! ";
       cout<<company << " (" << symbol << ") went down ";
       cout<<fixed<<setprecision(2)<<percentage<<"%";
   }
  
   /* if current price and previous price are same, run this*/
   /* we can also use just the else condition for this part */
   else if(current_price == previous_price){
       cout<<"It's a flat market! ";
       cout<<company << " (" << symbol << ") stock price didn't change. ";
   }
  
   return 0;
}