compsci

#include <iostream>
#include <iomanip>
#include <fstream>
#include <cassert>
#include <string>
using namespace std;

struct diffbin
{
	string part;
	int amount;
};

void Display(diffbin diffbinarr[],int i);
void RemoveParts(diffbin diffbinarr[],int i,string down,int number);
void AddParts(diffbin diffbinarr[],int i,string down,int number);
const int SIZE=10;

int main()
{
	diffbin diffbinarr[SIZE];
	ifstream myIn;
	myIn.open("inventory.dat");
	assert(myIn);
	string line;

	string down="";
	int number=0;
	bool flag=false;
	int i=0;
	while(getline(myIn,line))
	{
		if (flag==false)
		{
			down=line;
			flag=true;
		}
		else
		{

			getline(myIn,line);
			myIn>>number;
			flag=false;
			diffbinarr[i].part=down;
			diffbinarr[i].amount=number;
			i++;
		}

	}


	cout<<"Warehouse inventory before the operations"<<endl;
	cout<<endl;
	cout<<endl;
	Display(diffbinarr,i);


	ifstream infile;
	infile.open("operations.dat");
	assert(infile);
	string operation;

	int count=0;
	while(getline(infile,line))
	{
		if(count==0)
		{
			operation=line;
			count++;
		}
		else if(count==1)
		{
			down=line;
			count++;

		}
		else
		{
			getline(infile,line);
			infile>>number;
			if(operation=="Add")
			{
				AddParts(diffbinarr,i,down,number);
			}
			else
			{
				RemoveParts(diffbinarr,i,down,number);
			}
			count=0;
		}

	}


	cout<<"Warehouse inventory after the operations"<<endl;
	cout<<endl;
	cout<<endl;
	Display(diffbinarr,i);
	myIn.close();
	infile.close();
	return 0;
}

void Display(diffbin diffbinarr[],int i)
{
	cout<<setw(20)<<left<<"Part"<<setw(10)<<left<<"Quantity"<<endl;
	cout<<endl;
	cout<<endl;
	for(int a=0;a<i;a++)
		{
			cout<<setw(20)<<left;
			cout<<diffbinarr[a].part;
			cout<<setw(10)<<left;
			cout<<diffbinarr[a].amount<<endl;
		}
}



void AddParts(diffbin diffbinarr[],int i,string down,int number)
{
  for(int a=0;a<i;a++)
	{
		if(diffbinarr[a].part==down)
			{
				diffbinarr[a].amount+=number;
				break;
			}
	}
}


void RemoveParts(diffbin diffbinarr[],int i,string down,int number)
{
  for(int a=0;a<i;a++)
	{
		if(diffbinarr[a].part==down)
			{
				if(diffbinarr[a].amount-number>0)
					{
						diffbinarr[a].amount-=number;
					}
				else
				{

				}
			break;
			}
	}
}