Question

Marks: 2.5 Due: Week 5 lab class Classes and Objects Create a PC class that contains the following members: A private data member to store the speed of the CPU - A private data member to store the capacity of the hard disk - A private data member to store the capacity of the RAM - A private data member to store the cost of a PC A public member function that will obtain the speed of the CPU, the capacity of the hard disk, and the capacity of the RAM from the user. A public member function that computes and returns the cost of a PC. You should use the following formula to calculate the PC cost: cost=500+cpu_speed* 100+hd_capacity*50+ram_capacity*10; - A public member function that displays the PC's data using the output format shown below. Design the main() function that prompts the user to choose a number of PCs to be purchased. A dynamic array of PC objects will be created. The program will call class member functions to obtain the PCs' data from the user, calculate the cost of all PCs as well as to display all PCs data. The program will also compute and display the total cost of all PCs ordered. Your program should also contain the code that will check for and handle errors. A sample output could be as follows: Number of PCs ordered = 2 PC #1: 2.4 GHz CPU, 1 TB HD, 8 GB RAM PC #2:2.8 GHz CPU, 2 TB HD, 16 GB RAM $ 870.00 $ 1040.00 TOTAL: $ 1910.00

Answer 1

Given below is the code for the question.
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#include <iostream>
#include <iomanip>
using namespace std;

class PC{
private:
double cpu_speed;
int ram_capacity;
int hd_capacity;
double cost;
public:
void input(){
do{
cout << "Enter CPU Speed (in GHz): ";
cin >> cpu_speed;
if(cpu_speed <= 0)
cout << "Invalid CPU Speed!" << endl;
}while(cpu_speed <= 0);

do{
cout << "Enter Hard Disk capacity (in TB): ";
cin >> hd_capacity;
if(hd_capacity <= 0)
cout << "Invalid Hard Disk Capacity!" << endl;
}while(hd_capacity <= 0);

do{
cout << "Enter RAM capacity(in GB): ";
cin >> ram_capacity;
if(ram_capacity <= 0)
cout << "Invalid RAM capacity!" << endl;
}while(ram_capacity <= 0);
}

double getCost(){
cost = 500 + cpu_speed * 100 + hd_capacity * 50 + ram_capacity * 10;
return cost;
}

void display(){
cout << setw(5) << cpu_speed << " GHz CPU, " << setw(5) << hd_capacity << " TB HD, ";
cout << setw(5) << ram_capacity << " GB RAM" << "\t $" << right << setw(8) << getCost() << endl;
}
};

int main(){
int n;
double total = 0;

do{
cout << "How many PCs? ";
cin >> n;
}while(n <= 0);

PC *pcs = new PC[n];
for(int i = 0; i < n; i++){
cout << "Enter details for PC " << (i+1) << endl;
pcs[i].input();
cout << endl;
}

cout << "No. of PCs ordered = " << n << endl;
cout << fixed <<setprecision(2);
for(int i = 0; i < n; i++){
pcs[i].display();
total += pcs[i].getCost();
}

cout << endl << "Total" << setw(45) << "$" << setw(8)<< total << endl;

delete[] pcs; //deallocate memory
}

HOw many PCs? 2 Enter details for PC 1 Enter CPU Speed (in GHz): 2.4 Enter Hard Disk capacity (in TB): 1 Enter RAM capacity(in GB): 8 Enter details for PC 2 Enter CPU Speed (in GHz): 2.8 Enter Hard Disk capacity (in TB): 2 Enter RAM capacity (in GB): 16 No. of PCs ordered 2 8 GB RAM 1 TВ HЮ, 2 TВ HD, 2.40 GHz CPU, $ 870.00 2.80 GHz CPU, 1040.00 16 GB RAM Total $ 1910.00