struct ?

[tvn007]

I am working on the data struc. below:
is there way I can abbrev. the expression below to avoid long
expression.
Thanks......
///////////////////////////////////////////////////////////////////////////////////
#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
using namespace std;
const int MAX=50;
struct Record_info {
string bypassed;
string name;
int midterm;
double quiz;
double final;
string testname;
}student[MAX],*ptrstudent;

int main (void){
ptrstudent = student;
ifstream in ("test2.txt" );
string line;
string line2;
char buffer[40];
while (getline(in,lin e)){
if (line.find("#") !=string::npos) continue ;
istringstream anyname(line);

/////////// HOW CAN I ABBREV. EXPRESSION BELOW ?
////////////////////////////////////////

anyname>>ptrstu dent->bypassed>>ptrs tudent->name>>ptrstude nt->midterm;

anyname>>ptrstu dent->quiz>>ptrstude nt->final>>ptrstud ent->testname;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
ptrstudent++;
}
}

[Ron Natalie]

Re: struct ?

tvn007 wrote:
[color=blue]
> struct Record_info {
> string bypassed;
> string name;
> int midterm;
> double quiz;
> double final;
> string testname;[/color]

istream& operator>> (istream& is) (
is >> bypassed;
is >> name
is >> midterm;
is >> quiz
is >> final;
is >> testname;
return is;
}
[color=blue]
> }student[MAX],*ptrstudent;
>[/color]

[color=blue]
> int main (void){
> ptrstudent = student;
> ifstream in ("test2.txt" );
> string line;
> string line2;
> char buffer[40];
> while (getline(in,lin e)){
> if (line.find("#") !=string::npos) continue ;
> istringstream anyname(line);
>
> /////////// HOW CAN I ABBREV. EXPRESSION BELOW ?
> ////////////////////////////////////////
>[/color]

[color=blue]
> anyname>>ptrstu dent->bypassed>>ptrs tudent->name>>ptrstude nt->midterm;
>
> anyname>>ptrstu dent->quiz>>ptrstude nt->final>>ptrstud ent->testname;[/color]

anyname >> *ptrstudent;
[color=blue]
> //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
> ptrstudent++;
> }
> }
>[/color]

[Richard Herring]

Re: struct ?

In message <4385ded1$0$284 83$9a6e19ea@new s.newshosting.c om>, Ron Natalie
<ron@spamcop.ne t> writes[color=blue]
>tvn007 wrote:
>[color=green]
>> struct Record_info {
>> string bypassed;
>> string name;
>> int midterm;
>> double quiz;
>> double final;
>> string testname;[/color]
>
>istream& operator>> (istream& is) ([/color]

If its _left_ operand is to be an istream, this can't be a member
function of Record_info. It has to be a non-member function with two
arguments.

friend istream & operator>>(istr eam & is, Record_info & rec) {
[color=blue]
> is >> bypassed;[/color]
is >> rec.bypassed; // etc.[color=blue]
> is >> name
> is >> midterm;
> is >> quiz
> is >> final;
> is >> testname;
> return is;
>}
>[color=green]
>> }student[MAX],*ptrstudent;
>>[/color]
>
>[color=green]
>> int main (void){
>> ptrstudent = student;
>> ifstream in ("test2.txt" );
>> string line;
>> string line2;
>> char buffer[40];
>> while (getline(in,lin e)){
>> if (line.find("#") !=string::npos) continue ;
>> istringstream anyname(line);
>> /////////// HOW CAN I ABBREV. EXPRESSION BELOW ?
>> ////////////////////////////////////////
>>[/color]
>
>[color=green]
>> anyname>>ptrstu dent->bypassed>>ptrs tudent->name>>ptrstude nt->midterm;
>>
>> anyname>>ptrstu dent->quiz>>ptrstude nt->final>>ptrstud ent->testname;[/color]
>
> anyname >> *ptrstudent;
>[color=green]
>>
>>///////////////////////////////////////////////////////////////////////
>>///////////////////////////////////////////////////////
>> ptrstudent++;
>> }
>> }
>>[/color][/color]

--
Richard Herring

[tvn007]

Re: struct ?

I am not sure if it will work since I am using struct array and
pointer.

struct Record_info {
string bypassed;
string name;
int midterm;
double quiz;
double final;
string testname;
}student[MAX],*ptrstudent;
ptrstudent = student;

anyname>>ptrstu dent->bypassed>>ptrs tudent->name>>ptrstude nt->midterm;


anyname>>ptrstu dent->quiz>>ptrstude nt->final>>ptrstud ent->testname;

[Jakob Bieling]

Re: struct ?

tvn007 <tvn007@hotmail .com> wrote:[color=blue]
> I am not sure if it will work [..][/color]

Have you tried it?
--
jb

(reply address in rot13, unscramble first)

[Richard Herring]

Re: struct ?

In message <1132850220.211 488.114170@g43g 2000cwa.googleg roups.com>,
tvn007 <tvn007@hotmail .com> writes[color=blue]
>I am not sure if it will work[/color]

Not sure if _what_ will work? Please quote some context.
[color=blue]
>since I am using struct array and
>pointer.[/color]

I don't think that's relevant. Fundamentally you want to implement
operator>>(istr eam&, Record_info &). If the Record_info happens to be an
array element or the target of a pointer it makes no difference.[color=blue]
>
>struct Record_info {
> string bypassed;
> string name;
> int midterm;
> double quiz;
> double final;
> string testname;
> }student[MAX],*ptrstudent;
> ptrstudent = student;
>
>anyname>>ptrst udent->bypassed>>ptrs tudent->name>>ptrstude nt->midterm;
>
>
>anyname>>ptrst udent->quiz>>ptrstude nt->final>>ptrstud ent->testname;
>[/color]

anyname >> *ptrstudent;

--
Richard Herring