I'm working on a program that reads a series of data records from a file(screenshot of file below) and stores each record in a linked list in ascending order by items number and then prints the report. Right now I'm struggling on getting the Item Age which is computed by todays date(from the system) - the Item Purchase Date

My code:

/* Name: Jeavon White Assignment: Create an Ordered Single Linked List Due Date: 1/23/2018

*/ #include #include #include #include #include #include

using namespace std;

struct InventoryReport { int Item_Number; string Item_Category; int mm; int day; int year; float itemCost; int itemCount; int itemsSold; InventoryReport *next; };

void insert(InventoryReport*& Head, InventoryReport * itemPntr) { InventoryReport* prev = NULL; InventoryReport* curr = NULL;

//If head is empty. if (Head == NULL) { Head = itemPntr; } //Compares item numbers at head of list. else if (Head != NULL && Head->Item_Number > itemPntr->Item_Number) { itemPntr->next = Head; Head = itemPntr; } //If the new item number is less than head item number.

//Compares and adds item in middle of list. else { curr = Head; while(curr != NULL) { if (curr->Item_Number > itemPntr->Item_Number) { prev->next = itemPntr; itemPntr->next = curr; break; } prev = curr; curr = curr->next; } //Item placed at end of list. if(curr == NULL) prev->next = itemPntr; } }

string get_month( int month_number){ string month; switch (month_number) { case 0: month = "error"; break; case 1: month = "Jan."; break; case 2: month = "Feb."; break; case 3: month = "Mar."; break; case 4: month = "Apr."; break; case 5: month = "May"; break; case 6: month = "June"; break; case 7: month = "July"; break; case 8: month = "Aug."; break; case 9: month = "Sep."; break; case 10: month = "Oct."; break; case 11: month = "Nov."; break; case 12: month = "Dec."; break; default: // code to be executed if n doesn't match any cases month = "error"; }

return month; }

void print(InventoryReport * Head) { ofstream outF; outF.open("InventoryReport.dat"); float totalRevenue = 0;

//Pointer for date. time_t t = time(NULL); tm*timePtr = localtime(&t); int sub2 = timePtr->tm_mon + 1;

string month = get_month(sub2);

//Print to screen. cout tm_mday - 1) tm_year)+1900

cout

cout

//Print to file. outF tm_mday - 1) tm_year)+1900

outF

outF

InventoryReport * node1 = new InventoryReport; node1 = Head;

while (node1 != NULL) { //Calculate age of item. int age = (timePtr->tm_year) + 1900 - node1->year; float itmRevenue = node1->itemCost*node1->itemsSold; totalRevenue += itmRevenue;

if(node1->mm tm_mon) + 6) age += 1; int sub = node1->mm; string month = get_month(sub);

//Print to screen. cout Item_Number day year;

cout itemCost itemsSold

//Print to file. outF Item_Number day year;

outF itemCost itemsSold

node1 = node1->next; }; //Print to screen. cout

cout

//Print to file. outF

outF

outF.close(); } int main() { ifstream inF; inF.open("item_file.dat1.txt");

InventoryReport * newNode = NULL; InventoryReport * Head = NULL;

//Read in data from file. while (!inF.eof()) { newNode = new InventoryReport;

inF >> newNode->Item_Number; inF >> newNode->Item_Category; inF >> newNode->mm; inF >> newNode->day; inF >> newNode->year; inF >> newNode->itemCost; inF >> newNode->itemCount; inF >> newNode->itemsSold;

insert(Head, newNode); }

InventoryReport *temp = Head;

print(Head);

inF.close();

return 0;

}

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