a) Write a definition of a structure called Part, containing fields of item (str

Question

a) Write a definition of a structure called Part, containing fields of item (string up to 20 characters), price (float) and quantity (integer).

b) Write a function with header void Display (Part p) which accepts a structure and prints all three fields. Note that this header uses “pass by value”.

c) Write a function float Cost (Part* p) which calculates the total cost of the parts. Note that this header uses “pass by address”.

d) This code creates an array of 5 parts: const int n = 5; Part p[5]; Write a for loop that uses the Cost function above to find the total cost of all 5 parts and print this total after the loop.

e) Write a function called TotalCost which as input takes the entire array of all 5 parts and calculates the total cost, returning this value. Here is a call statement: total = TotalCost (p, n); Write a program using all these functions, called inventory.CPP

Explanation / Answer

#include <iostream>

using namespace std;

struct Part {
string item;
float price;
int quantity;
}p[5];

void display(Part p);
float cost(Part* p);
float totalCost(Part p[],int n);

int main()
{
float total=0;
for(int i=0;i<5;i++){
p[i].item="Item"+i;
p[i].price=i;
p[i].quantity=i;
total=total+cost(&p[i]);
}
  
  
cout << "totalCost :" << total<<endl;
total = totalCost(p,5);
cout << "totalCost :" << total<<endl;

return 0;
}
void display(Part p){
cout <<"Item :"<< p.item<< endl;
cout << "Price :"<<p.price<< endl;
cout << "Quantity :"<<p.quantity<< endl;
}

float totalCost(Part p[],int n){
float totalCost=0;
for(int i=0;i<n;i++){
p[i].item="Item"+i;
p[i].price=i;
p[i].quantity=i;
totalCost=totalCost+cost(&p[i]);
}
return totalCost;

}

float cost(Part* p){
float total = p->quantity*p->price;
return total;
}

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