Connect 5 LEDs with any random colors. Iteratively, turn ON 1 to 5 LED(s) that will take 5 iterations in total, and in every ite
ration ask the user "How many LEDs are ON?". At the end of the completion of all iterations, display in the output "Correct answers: a%". For example, if a user’s answers are correct to none of the 5 questions, then display "Correct answers: 0%"; If a user’s answers are correct to 1 question, then display "Correct answers: 20%"; If a user’s answers are correct to 2 questions, then display "Correct answers: 40%"; and so on.
1 answer:
Answer:
See explaination for program code.
Explanation:
C++ programming language is a powerful general-purpose programming language. It can be used to develop operating systems, browsers, games, and so on.
C++ supports different ways of programming like procedural, object-oriented, functional, and so on. This makes C++ powerful as well as flexible.
Please kindly refer to attachment for a C++ programming code that performs the operation.
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Using the computational language C++ it is possible to write a code is possible to create a function that stores items like this:
<h3>Writting the code in C++: </h3><em>//Header files</em>
<em>#include <iostream></em>
<em>#include <string></em>
<em>#include <fstream></em>
<em>using namespace std;</em>
<em>//Class inventoryItem</em>
<em>class inventoryItem</em>
<em>{</em>
<em>public:</em>
<em>//Variable declaration</em>
<em>string itemName;</em>
<em>string itemNumber;</em>
<em>double itemPrice;</em>
<em>int itemQuantity;</em>
<em>};</em>
<em>//implementation of menuItems() function.</em>
<em>void menuItems()</em>
<em>{</em>
<em>// Display the Menu</em>
<em>cout << "=============================\n";</em>
<em>cout << " 1) Add an item to memory\n"</em>
<em><< " 2) Search memory for an item \n"</em>
<em><< " 3) List what's in memory\n"</em>
<em><< " 4) Total value on hand\n"</em>
<em><< " 5) Save to a file\n"</em>
<em><< " 6) Read from a file\n"</em>
<em><< " 0) Exit Program" << endl;</em>
<em>}</em>
<em>//main method.</em>
<em>int main()</em>
<em>{</em>
<em>//variable declaration.</em>
<em>int mnuChoice, cn = 0, d;</em>
<em>string n;</em>
<em>double sum = 0, c;</em>
<em>int temp;</em>
<em>string a, b;</em>
<em>string inputBuffer;</em>
<em>inventoryItem items[100];</em>
<em>ifstream inventoryFile("inventory.txt");</em>
<em>if (inventoryFile)</em>
<em>{</em>
<em>//store the data from the file to memory.</em>
<em>while (!(inventoryFile.eof()))</em>
<em>{</em>
<em>inventoryFile >> items[cn].itemName;</em>
<em>inventoryFile >> items[cn].itemNumber;</em>
<em>inventoryFile >> inputBuffer;</em>
<em>items[cn].itemPrice = atof(inputBuffer.c_str());</em>
<em>inventoryFile >> inputBuffer;</em>
<em>items[cn].itemQuantity = atoi(inputBuffer.c_str());</em>
<em>cn++;</em>
<em>}</em>
<em>inventoryFile.close();</em>
<em>ifstream inventoryFile("inventory.txt");</em>
<em>ofstream fout;</em>
<em>fout.open("inventory.txt");</em>
<em>do</em>
<em>{</em>
<em>menuItems();</em>
<em>cout << cn << " items stored." << endl;</em>
<em>// Prompt and read choice form the user</em>
<em>cout << "Enter your choice: ";</em>
<em>cin >> mnuChoice;</em>
<em />
<em>switch (mnuChoice)</em>
<em>{</em>
<em>//Add a new inventory item to the data in memory.</em>
<em>case 1:</em>
<em>// Prompt and read name of the item from the user</em>
<em>cout << "Enter name of the item: ";</em>
<em>cin >> inputBuffer;</em>
<em>items[cn].itemName = inputBuffer;</em>
<em>// Prompt and read itemNumber from the user</em>
<em>cout << "Enter the itemNumber: ";</em>
<em>cin >> inputBuffer;</em>
<em>items[cn].itemNumber = inputBuffer;</em>
<em>// Prompt and read itemPrice from the user</em>
<em>cout << "Enter the itemPrice: ";</em>
<em>cin >> inputBuffer;</em>
<em>items[cn].itemPrice = atof(inputBuffer.c_str());</em>
<em>// Prompt and read itemQuantity from the user</em>
<em>cout << "Enter the itemQuantity: ";</em>
<em>cin >> inputBuffer;</em>
<em>items[cn].itemQuantity = atoi(inputBuffer.c_str());</em>
<em>cn++;</em>
<em>break;</em>
<em>//Search the inventory for an item by inventory number.</em>
<em>case 2:</em>
<em>temp = 0;</em>
<em>cout << "Enter inventory itemNumber: ";</em>
<em>cin >> n;</em>
<em>for (int i = 0; i < cn&&temp != 1; i++)</em>
<em>{</em>
<em>// If found, print the stored info</em>
<em>if (items[i].itemNumber.compare(n) == 0)</em>
<em>{</em>
<em>// Display the stored information</em>
<em>cout << "Item Name" << "\t" << "Item Number" << "\t" << " Item Price" << "\t" << " Item Quantity" << endl;</em>
<em>cout << items[i].itemName << "\t " << items[i].itemNumber << " \t" << items[i].itemPrice << "\t " << items[i].itemQuantity << endl;</em>
<em>temp = 1;</em>
<em>}</em>
<em>}</em>
<em>// otherwise print 'not found'.</em>
<em>if (temp == 0)</em>
<em>{</em>
<em>cout << "Not found!!!" << endl;</em>
<em>}</em>
<em>break;</em>
<em>//List the inventory on the screen</em>
<em>case 3:</em>
<em>cout << "The data in the memory is:" << endl;</em>
<em>cout << "Item Name" << "\t" << "Item Number" << "\t" << " Item Price" << "\t" << " Item Quantity" << endl;</em>
<em>for (int i = 0; i < cn; i++)</em>
<em>{</em>
<em>cout << items[i].itemName << "\t " << items[i].itemNumber << "\t " << items[i].itemPrice << " \t" << items[i].itemQuantity << endl;</em>
<em>}</em>
<em>break;</em>
<em>// Calculate the total value on hand.</em>
<em>case 4:</em>
<em>for (int i = 0; i < cn; i++)</em>
<em>{</em>
<em>// The sum is the accumulation of all the (quantities * prices).</em>
<em>sum += items[i].itemPrice*items[i].itemQuantity;</em>
<em>}</em>
<em>cout << "sum value on hand: " << sum << endl;</em>
<em>break;</em>
<em>// Save the inventory data in the given file</em>
<em>case 5:</em>
<em>for (int i = 0; i < cn; i++)</em>
<em>{</em>
<em>if (i == cn - 1)</em>
<em>{</em>
<em />
<em>fout << items[i].itemName << " \t" << items[i].itemNumber << " \t" << items[i].itemPrice << " \t" << items[i].itemQuantity;</em>
<em>}</em>
<em>else</em>
<em>{</em>
<em />
<em>fout << items[i].itemName << " \t" << items[i].itemNumber << " \t" << items[i].itemPrice << " \t" << items[i].itemQuantity << endl;</em>
<em>}</em>
<em>}</em>
<em>break;</em>
<em>// Read the data from the file</em>
<em>case 6:</em>
<em>while (!(inventoryFile.eof()))</em>
<em>{</em>
<em>inventoryFile >> a;</em>
<em>inventoryFile >> b;</em>
<em>inventoryFile >> inputBuffer;</em>
<em>c = atof(inputBuffer.c_str());</em>
<em>inventoryFile >> inputBuffer;</em>
<em>d = atoi(inputBuffer.c_str());</em>
<em>// Dsiplays the data in the file</em>
<em />
<em>cout << a << " " << b << " " << c << " " << d << endl;</em>
<em>}</em>
<em>break;</em>
<em>}</em>
<em>// Check the menu choice is not equal to 0,</em>
<em>//if it is equal exit from the loop</em>
<em>} while (mnuChoice != 0);</em>
<em>// File closed</em>
<em>fout.close();</em>
<em>inventoryFile.close();</em>
<em>}</em>
<em>// If the inventory file does not exist</em>
<em>// and then display the error message.</em>
<em>else</em>
<em>{</em>
<em>cout << "File does not exist!" << endl;</em>
<em>}</em>
<em />
<em>return 0;</em>
<em>}</em>
See more about C++ code at brainly.com/question/17544466
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