The following is a sample inventory in C++, i want to ask the user to input a item number for removing from inventory. //CPP #include <iostream> #include <fstream> #include <cstdlib>...
The following is a sample inventory in C++, i want to ask the user to input a item number for removing from inventory.
//CPP
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <iomanip>
#define MAX 1000
using namespace std;
//Function to Add a new inventory item to the data into the array in memory
void addItem(string desc[],string idNum[], float prices[], int qty[],int &num)
{
cout<<"Enter the names:";
cin>>desc[num];
cout<<"Enter the item number:";
cin>>idNum[num];
cout<<"Enter the price of item:";
cin>>prices[num];
cout<<"Enter the quantity:";
cin>>qty[num];
num++;
}
//Function to Search the inventory (in the array in memory) for an item by inventory number
void searchItem(string desc[],string idNum[], float prices[], int qty[],int num)
{
string itemno;
int i;
cout<<"Enter the item number to be searched:";
cin>>itemno;
for(i=0; i<num; i++)
{
if(itemno == idNum[i])
break;
}
if(i == num)
cout<< itemno <<" not found"<<endl;
else
{
cout<<left<<setw(25)<<"Item Name"<<left<<setw(25)<<"Item Number"<<left<<setw(15)<<"Price"<<left<<setw(15)<<"Quantity"<<endl;
cout<<left<<setw(25)<<desc[i]<<left<<setw(25)<<idNum[i]<<left<<setw(15)<<prices[i]<<left<<setw(15)<<qty[i]<<endl;
}
}
//Function List the inventory (in the array in memory) on the screen in neat columns
void listItem(string desc[],string idNum[], float prices[], int qty[],int num)
{
cout<<left<<setw(25)<<"Item Name"<<left<<setw(25)<<"Item Number"<<left<<setw(15)<<"Price"<<left<<setw(15)<<"Quantity"<<endl;
for(int i=0; i<num; i++)
cout<<left<<setw(25)<<desc[i]<<left<<setw(25)<<idNum[i]<<left<<setw(15)<<prices[i]<<left<<setw(15)<<qty[i]<<endl;
}
//Function to Calculate the total value on hand of the inventory (in the array in memory)
void totalValue(string desc[],string idNum[], float prices[], int qty[],int num)
{ float value=0;
for(int i=0; i<num; i++)
value = value + (prices[i] * qty[i]);
cout<<"The total value of Inventory:"<<value<<endl;
}
//Function to Save the array in memory to a disk file
void saveFile(ofstream &fout,string desc[],string idNum[], float prices[], int qty[],int num)
{
fout.open("inventory.dat");
if(!fout)
{
cout<<"File cannot be opened for writing"<<endl;
exit(0);
}
for(int i=0; i<num; i++)
{
fout<<desc[i]<<endl;
fout<<idNum[i]<<endl;
fout<<prices[i]<<endl;
fout<<qty[i]<<endl;
}
fout.close();
cout<<"File Saved"<<endl;
}
//Read from a disk file to the array in memory
void readFile(ifstream &fin,string desc[],string idNum[], float prices[], int qty[],int &num)
{
fin.open("inventory.dat");
if(!fin)
{
cout<<"File cannot be opened for reading"<<endl;
exit(0);
}
num=0;
while(!fin.eof())
{ fin>>desc[num];
fin>>idNum[num];
fin>>prices[num];
fin>>qty[num];
num++;
}
num--;
cout<<"Read from a disk file to the array"<<endl;
fin.close();
}
//main() function display the menu on screen & call desired function selected from menu option
int main()
{
int choice, num=0;
string descriptions[MAX];
string idNumbers[MAX];
float prices[MAX];
int quantity[MAX];
ifstream fin; // input file stream for reading file
ofstream fout; // output file stream for writing into file
do {
//Displaying menu options
cout<<endl<<endl;
cout<<"1) Add an item to memory"<<endl;
cout<<"2) Search memory for an item"<<endl;
cout<<"3) List Items"<<endl;
cout<<"4) Total value on hand"<<endl;
cout<<"5) Save to a file"<<endl;
cout<<"6) Read in from a file"<<endl;
cout<<"0) Exit Program"<<endl;
cout<<"Enter Choice:"<<endl;
cin>>choice;
// function calling will be based on the choice selected from menu options
switch(choice) {
case 1: addItem(descriptions, idNumbers, prices, quantity, num);
break;
case 2: searchItem(descriptions, idNumbers, prices, quantity, num);
break;
case 3: listItem(descriptions, idNumbers, prices, quantity, num);
break;
case 4: totalValue(descriptions, idNumbers, prices, quantity, num);
break;
case 5: saveFile(fout,descriptions, idNumbers, prices, quantity, num);
break;
case 6: readFile(fin, descriptions, idNumbers, prices, quantity, num);
break;
}
}while(choice!=0); // end of loop
return 1;
}
Homework Answers
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <iomanip>
#define MAX 1000
using namespace std;
//Function to Add a new inventory item to the data into the array in memory
void addItem(string desc[],string idNum[], float prices[], int qty[],int &num)
{
cout<<"Enter the names:";
cin>>desc[num];
cout<<"Enter the item number:";
cin>>idNum[num];
cout<<"Enter the price of item:";
cin>>prices[num];
cout<<"Enter the quantity:";
cin>>qty[num];
num++;
}
//Function to Search the inventory (in the array in memory) for an item by inventory number
void searchItem(string desc[],string idNum[], float prices[], int qty[],int num)
{
string itemno;
int i;
cout<<"Enter the item number to be searched:";
cin>>itemno;
for(i=0; i<num; i++)
{
if(itemno == idNum[i])
break;
}
if(i == num)
cout<< itemno <<" not found"<<endl;
else
{
cout<<left<<setw(25)<<"Item Name"<<left<<setw(25)<<"Item Number"<<left<<setw(15)<<"Price"<<left<<setw(15)<<"Quantity"<<endl;
cout<<left<<setw(25)<<desc[i]<<left<<setw(25)<<idNum[i]<<left<<setw(15)<<prices[i]<<left<<setw(15)<<qty[i]<<endl;
}
}
//Function List the inventory (in the array in memory) on the screen in neat columns
void listItem(string desc[],string idNum[], float prices[], int qty[],int num)
{
cout<<left<<setw(25)<<"Item Name"<<left<<setw(25)<<"Item Number"<<left<<setw(15)<<"Price"<<left<<setw(15)<<"Quantity"<<endl;
for(int i=0; i<num; i++)
cout<<left<<setw(25)<<desc[i]<<left<<setw(25)<<idNum[i]<<left<<setw(15)<<prices[i]<<left<<setw(15)<<qty[i]<<endl;
}
//Function to Calculate the total value on hand of the inventory (in the array in memory)
void totalValue(string desc[],string idNum[], float prices[], int qty[],int num)
{
float value=0;
for(int i=0; i<num; i++)
value = value + (prices[i] * qty[i]);
cout<<"The total value of Inventory:"<<value<<endl;
}
//Function to Save the array in memory to a disk file
void saveFile(ofstream &fout,string desc[],string idNum[], float prices[], int qty[],int num)
{
fout.open("inventory.dat");
if(!fout)
{
cout<<"File cannot be opened for writing"<<endl;
exit(0);
}
for(int i=0; i<num; i++)
{
fout<<desc[i]<<endl;
fout<<idNum[i]<<endl;
fout<<prices[i]<<endl;
fout<<qty[i]<<endl;
}
fout.close();
cout<<"File Saved"<<endl;
}
//Read from a disk file to the array in memory
void readFile(ifstream &fin,string desc[],string idNum[], float prices[], int qty[],int &num)
{
fin.open("inventory.dat");
if(!fin)
{
cout<<"File cannot be opened for reading"<<endl;
exit(0);
}
num=0;
while(!fin.eof())
{ fin>>desc[num];
fin>>idNum[num];
fin>>prices[num];
fin>>qty[num];
num++;
}
num--;
cout<<"Read from a disk file to the array"<<endl;
fin.close();
}
// Function to Remove the item from the inventory (in the array in memory) by item number
void removeItem(string desc[],string idNum[], float prices[], int qty[],int &num)
{
bool found = false;
string itemNo;
int i,j;
// input of item number to be removed
cout<<"Enter the item number to be removed :";
cin>>itemNo;
// loop over the items to find the index of itemNo
for(i=0;i<num;i++)
{
// if item is found
if(itemNo == idNum[i]) // case-sensitive search
{
// shift all the elements one position up in order to remove the item from the inventory
for(j=i;j<num-1;j++)
{
desc[j] = desc[j+1];
idNum[j] = idNum[j+1];
prices[j] = prices[j+1];
qty[j] = qty[j+1];
}
num--; // decrement the number of items in inventory
found = true;
break;
}
}
if(!found)
cout<< itemNo <<" not found"<<endl;
else
cout<<itemNo<<" removed"<<endl;
}
//main() function display the menu on screen & call desired function selected from menu option
int main() {
int choice, num=0;
string descriptions[MAX];
string idNumbers[MAX];
float prices[MAX];
int quantity[MAX];
ifstream fin; // input file stream for reading file
ofstream fout; // output file stream for writing into file
do {
//Displaying menu options
cout<<endl<<endl;
cout<<"1) Add an item to memory"<<endl;
cout<<"2) Search memory for an item"<<endl;
cout<<"3) List Items"<<endl;
cout<<"4) Total value on hand"<<endl;
cout<<"5) Save to a file"<<endl;
cout<<"6) Read in from a file"<<endl;
cout<<"7) Remove an item from memory"<<endl;
cout<<"0) Exit Program"<<endl;
cout<<"Enter Choice:"<<endl;
cin>>choice;
// function calling will be based on the choice selected from menu options
switch(choice) {
case 1: addItem(descriptions, idNumbers, prices, quantity, num);
break;
case 2: searchItem(descriptions, idNumbers, prices, quantity, num);
break;
case 3: listItem(descriptions, idNumbers, prices, quantity, num);
break;
case 4: totalValue(descriptions, idNumbers, prices, quantity, num);
break;
case 5: saveFile(fout,descriptions, idNumbers, prices, quantity, num);
break;
case 6: readFile(fin, descriptions, idNumbers, prices, quantity, num);
break;
case 7:
removeItem(descriptions, idNumbers, prices, quantity, num);
break;
}
}while(choice!=0); // end of loop
return 0;
}
//end of program
Output:
Add Answer to:
The following is a sample inventory in C++, i want to ask the user to input a item number for removing from inventory. //CPP #include <iostream> #include <fstream> #include <cstdlib>...
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