Может ли кто-то также сказать мне, если действия, которые я пытаюсь сделать, которые указаны в комментариях, являются правильными или нет. Я новичок в C ++, и я думаю, что это правильно, но у меня есть сомнения
#include<iostream>
#include<fstream>
#include<cstdlib>
#include<iomanip>
using namespace std;
int main()
{
ifstream in_stream; // reads itemlist.txt
ofstream out_stream1; // writes in items.txt
ifstream in_stream2; // reads pricelist.txt
ofstream out_stream3;// writes in plist.txt
ifstream in_stream4;// read recipt.txt
ofstream out_stream5;// write display.txt
float price=' ',curr_total=0.0;
int wrong=0;
int itemnum=' ';
char next;
in_stream.open("ITEMLIST.txt", ios::in); // list of avaliable items
if( in_stream.fail() )// check to see if itemlist.txt is open
{
wrong++;
cout << " the error occured here0, you have " << wrong++ << " errors" << endl;
cout << "Error opening the file\n" << endl;
exit(1);
}
else{
cout << " System ran correctly " << endl;
out_stream1.open("listWititems.txt", ios::out); // list of avaliable items
if(out_stream1.fail() )// check to see if itemlist.txt is open
{
wrong++;
cout << " the error occured here1, you have " << wrong++ << " errors" << endl;
cout << "Error opening the file\n";
exit(1);
}
else{
cout << " System ran correctly " << endl;
}
in_stream2.open("PRICELIST.txt", ios::in);
if( in_stream2.fail() )
{
wrong++;
cout << " the error occured here2, you have " << wrong++ << " errors" << endl;
cout << "Error opening the file\n";
exit (1);
}
else{
cout << " System ran correctly " << endl;
}
out_stream3.open("listWitdollars.txt", ios::out);
if(out_stream3.fail() )
{
wrong++;
cout << " the error occured here3, you have " << wrong++ << " errors" << endl;
cout << "Error opening the file\n";
exit (1);
}
else{
cout << " System ran correctly " << endl;
}
in_stream4.open("display.txt", ios::in);
if( in_stream4.fail() )
{
wrong++;
cout << " the error occured here4, you have " << wrong++ << " errors" << endl;
cout << "Error opening the file\n";
exit (1);
}
else{
cout << " System ran correctly " << endl;
}
out_stream5.open("showitems.txt", ios::out);
if( out_stream5.fail() )
{
wrong++;
cout << " the error occured here5, you have " << wrong++ << " errors" << endl;
cout << "Error opening the file\n";
exit (1);
}
else{
cout << " System ran correctly " << endl;
}
in_stream.close(); // closing files.
out_stream1.close();
in_stream2.close();
out_stream3.close();
in_stream4.close();
out_stream5.close();
system("pause");
in_stream.setf(ios::fixed);
while(in_stream.eof())
{
in_stream >> itemnum;
cin.clear();
cin >> next;
}
out_stream1.setf(ios::fixed);
while (out_stream1.eof())
{
out_stream1 << itemnum;
cin.clear();
cin >> next;
}
in_stream2.setf(ios::fixed);
in_stream2.setf(ios::showpoint);
in_stream2.precision(2);
while((price== (price*1.00)) && (itemnum == (itemnum*1)))
{
while (in_stream2 >> itemnum >> price) // gets itemnum and price
{
while (in_stream2.eof()) // reads file to end of file
{
in_stream2 >> itemnum;
in_stream2 >> price;
price++;
curr_total= price++;
in_stream2 >> curr_total;
cin.clear(); // allows more reading
cin >> next;
}
}
}
out_stream3.setf(ios::fixed);
out_stream3.setf(ios::showpoint);
out_stream3.precision(2);
while((price== (price*1.00)) && (itemnum == (itemnum*1)))
{
while (out_stream3 << itemnum << price)
{
while (out_stream3.eof()) // reads file to end of file
{
out_stream3 << itemnum;
out_stream3 << price;
price++;
curr_total= price++;
out_stream3 << curr_total;
cin.clear(); // allows more reading
cin >> next;
}
return itemnum, price;
}
}
in_stream4.setf(ios::fixed);
in_stream4.setf(ios::showpoint);
in_stream4.precision(2);
while ( in_stream4.eof())
{
in_stream4 >> itemnum >> price >> curr_total;
cin.clear();
cin >> next;
}
out_stream5.setf(ios::fixed);
out_stream5.setf(ios::showpoint);
out_stream5.precision(2);
out_stream5 <<setw(5)<< " itemnum " <<setw(5)<<" price "<<setw(5)<<" curr_total " <<endl; // sends items and prices to receipt.txt
out_stream5 << setw(5) << itemnum << setw(5) <<price << setw(5)<< curr_total; // sends items and prices to receipt.txt
out_stream5 << " You have a total of " << wrong++ << " errors " << endl;
}