how to op text file use stl string?

[Chelong]

hey
now i have a problem,for me a c++ beginner.so i need ur help?

here i have a text file from the copy of excel data,like this:

=======================================================apple====pear===
First XXZHYY3A(Lily) 0 20 8 0 0 7 XXZHYY3A£¨Lily£© 8 0 0 8 8 8
XXZHYY3A£¨huang£© 7 0 0 7 7 5 Senco XXZHYY3B(huang) 22 22 3.652 22
22 4 XXZHYY11A£¨cheng£© 70¸ö 60 9.96 7 70
Third XSJ14B(huang) 20 20 6.6666 20 20 5 XSJ14B(Lily) 23 23 7.66659 23
23 8 XXZHYY6(huang) 26 30 9.9999 26 26 9
.......................and it is a big txt file.
======================================================================
first,i want to make it like this:

=======================================================apple====pear===
First XXZHYY3A(Lily) 0 20 8 0 0 7
First XXZHYY3A£¨Lily£© 8 0 0 8 8 8
First XXZHYY3A£¨huang£© 7 0 0 7 7 5 Senco XXZHYY3B(huang) 22 22
3.652 22 22 4
Senco XXZHYY11A£¨cheng£© 70¸ö 60 9.96 7 70
Third XSJ14B(huang) 20 20 6.6666 20 20 5
Third XSJ14B(Lily) 23 23 7.66659 23 23 8
Third XXZHYY6(Lily) 26 30 9.9999 26 26 9
.......................and it is a big txt file.
======================================================================
how can i implica it usin STL,or another fast way,is it vector can
implic it?

and the second,i want to select the line that include First &&Lily ,
Lily && Third ,and so on ,
and then i want to get ,for example:
Lily first apple = 0 + 8 pear = 7 + 8
Lily Third apple = 23 + 26 pear =8 + 9

Do u know what i mean?

waiting for ur help !

thanks advan!

 

[Salt_Peter]

hey
now i have a problem,for me a c++ beginner.so i need ur help?

here i have a text file from the copy of excel data,like this:

=======================================================apple====pear===
First XXZHYY3A(Lily) 0 20 8 0 0 7 XXZHYY3A£¨Lily£© 8 0 0 8 8 8
XXZHYY3A£¨huang£© 7 0 0 7 7 5 Senco XXZHYY3B(huang) 22 22 3.652 22
22 4 XXZHYY11A£¨cheng£© 70¸ö 60 9.96 7 70
Third XSJ14B(huang) 20 20 6.6666 20 20 5 XSJ14B(Lily) 23 23 7.66659 23
23 8 XXZHYY6(huang) 26 30 9.9999 26 26 9
......................and it is a big txt file.
======================================================================
first,i want to make it like this:

=======================================================apple====pear===
First XXZHYY3A(Lily) 0 20 8 0 0 7
First XXZHYY3A£¨Lily£© 8 0 0 8 8 8
First XXZHYY3A£¨huang£© 7 0 0 7 7 5 Senco XXZHYY3B(huang) 22 22
3.652 22 22 4
Senco XXZHYY11A£¨cheng£© 70¸ö 60 9.96 7 70
Third XSJ14B(huang) 20 20 6.6666 20 20 5
Third XSJ14B(Lily) 23 23 7.66659 23 23 8
Third XXZHYY6(Lily) 26 30 9.9999 26 26 9
......................and it is a big txt file.
======================================================================
how can i implica it usin STL,or another fast way,is it vector can
implic it?

and the second,i want to select the line that include First &&Lily ,
Lily && Third ,and so on ,
and then i want to get ,for example:
Lily first apple = 0 + 8 pear = 7 + 8
Lily Third apple = 23 + 26 pear =8 + 9

Do u know what i mean?

waiting for ur help !

thanks advan!

Start with the basics, assuming a file that looks like this:
string1
string2
string3

How can you read each line and store these in a std::vector<
std::string >?
Hint:
a) #include <fstream>
b) open a std::ifstream to the target file and
c) use std::getline(...) to read one line at a time into a std::string
buffer.
d) push_back() the contents of the buffer onto the std::vector<
std::string >.

Then display each std::string element to the screen to prove it worked
(by iterating through the vector's elements).
That should be doable without expending a huge amount of effort. If
you can read and store one string, you can store 10,000 or more of
them.

The Excel data:
Analyze the fields and decide what types (std::string, int, double,
long, etc) each field might require. In other words, how must each
field be stored in the Record?
Then write a class that reflects the structure of the record involved.

class Record
{
...
};

Prove that you can initilaize and store an instance of that
record( don't worry about reading these from a file now).
Record record("Lily", 0, 20, 8, 0, 0, 7); //or whatever...
and display the record using std::cout (prefereably using a global
op<< overload).

Its all about methodology. One step at a time. Its the same principle
if you are new to a language or if you have 20 years experience. Once
you can store one Record, you can store any number of these:
std::vector< Record > records;
The Record class needs to be copyable and assigneable to satisfy the
requirements of a dynamic container like a std::vector. (what does
that mean?)

To parse the Excel data:
Once you get this far, you can start zeroing in on the problem at
hand: reading and storing the tabulated data.
Keep it simple, use a file with only one single Record to parse with:
First XXZHYY3A(Lily) 0 20 8 0 0 7

 

[Keith Halligan]

hey
now i have a problem,for me a c++ beginner.so i need ur help?

here i have a text file from the copy of excel data,like this:

=======================================================apple====pear===
First XXZHYY3A(Lily) 0 20 8 0 0 7 XXZHYY3A£¨Lily£© 8 0 0 8 8 8
XXZHYY3A£¨huang£© 7 0 0 7 7 5 Senco XXZHYY3B(huang) 22 22 3.652 22
22 4 XXZHYY11A£¨cheng£© 70¸ö 60 9.96 7 70
Third XSJ14B(huang) 20 20 6.6666 20 20 5 XSJ14B(Lily) 23 23 7.66659 23
23 8 XXZHYY6(huang) 26 30 9.9999 26 26 9
......................and it is a big txt file.
======================================================================
first,i want to make it like this:

=======================================================apple====pear===
First XXZHYY3A(Lily) 0 20 8 0 0 7
First XXZHYY3A£¨Lily£© 8 0 0 8 8 8
First XXZHYY3A£¨huang£© 7 0 0 7 7 5 Senco XXZHYY3B(huang) 22 22
3.652 22 22 4
Senco XXZHYY11A£¨cheng£© 70¸ö 60 9.96 7 70
Third XSJ14B(huang) 20 20 6.6666 20 20 5
Third XSJ14B(Lily) 23 23 7.66659 23 23 8
Third XXZHYY6(Lily) 26 30 9.9999 26 26 9
......................and it is a big txt file.
======================================================================
how can i implica it usin STL,or another fast way,is it vector can
implic it?

and the second,i want to select the line that include First &&Lily ,
Lily && Third ,and so on ,
and then i want to get ,for example:
Lily first apple = 0 + 8 pear = 7 + 8
Lily Third apple = 23 + 26 pear =8 + 9

Do u know what i mean?

waiting for ur help !

thanks advan!

It would be best to save the excel data as csv format (Comma Separated
Values). This will make it easier to parse, as you are separating
records on newlines and fields on commas.

 

[Chelong]

It would be best to save the excel data as csv format (Comma Separated
Values). This will make it easier to parse, as you are separating
records on newlines and fields on commas.- Òþ²Ø±»ÒýÓÃÎÄ×Ö -

- ÏÔʾÒýÓõÄÎÄ×Ö -

===================================================
thank u very much ! i will try it that!