Querry!!

Razanust

I have names of certain students and their ages stored in a text file 'records.txt'. LIKE: John 22 Paul 21 Sam 24 Harry 23 Now i want to store these ages and names in a structure 'records(r)' directly from the file. (Here i am not taking any input from the user) as r.name & r.age. Any clue to the solution???

Chandrasekharan P

I believe this query was answered

Razanust

I couldn't get that. Plesae elaborate the clue so that i can learn a bit more. I am trying to use the "isdigit" command for this purpose. Would that be suitable?

Harsh Shankar

Dear Razanust, I'll first suggess you not to create a new thread if you aren't satisfied with the answer.

Razanust wrote:

couldn't get that. Plesae elaborate the clue so that i can learn a bit more. I am trying to use the "isdigit" command for this purpose. Would that be suitable?

Now, as your file is a text file, :confused: First Clear whether you have stored it by formating by sprintf and then WriteFile etc or Writing the structure directly? HARSH Programmers are in a race with the Universe to create bigger and better idiot-proof programs, while the Universe is trying to create bigger and better idiots. So far the Universe is winning.

modified on Tuesday, June 30, 2009 3:59 AM

Michael Schubert

Razanust wrote:

Any clue to the solution???

1. Read the file line by line 2. use something like strtok to tokenize each line 3. fill the structure

Rajesh R Subramanian

You need to open the file, read the contents, parse the read contents, store them into an array of structures. Which part of this exercise are you having a problem with? And what have you done so far?

It is a crappy thing, but it's life -^ Carlo Pallini

Harsh Shankar

I Don't know why u are trying there tipical methods. Just Try the "C" way: -

struct MyStruct
{
	char Name\[20\];
	int age;
}
// Fill the Structure with the appropriate values
MyStruct myStruct;
FILE \*pFile = fopen("Record.txt", "Wb+");
fwrite((char\*)&myStruct, sizeof(MyStruct), 1, pFile);

and to reead :-

fread((char*)&myStruct, sizeof(MyStruct), 1, pFile);

HARSH Programmers are in a race with the Universe to create bigger and better idiot-proof programs, while the Universe is trying to create bigger and better idiots. So far the Universe is winning.

Michael Schubert

Harsh Shankar wrote:

I Don't know why u are trying there tipical methods.

What?

Harsh Shankar

Wouldn't it be easier to read and write the data in the file by my given way??

HARSH Programmers are in a race with the Universe to create bigger and better idiot-proof programs, while the Universe is trying to create bigger and better idiots. So far the Universe is winning.

modified on Tuesday, June 30, 2009 5:25 AM

Aric Wang

supposing your use C language.may be this is a simply.You could use fscanf() function to realize it.You may find out the method of "fscanf()".

Like C++ more

Michael Schubert · modified on Tuesday, June 30, 2009 5:25 AM

I don't see anything in his post about writing the data back to a file. He only wants to read the file and store the tokens in a structure (or presumably an array of structures).

David Crow

Razanust wrote:

Any clue to the solution???

Well, something like this comes to mind:

std::ifstream fin;
std::vector<Record> records;

fin.open("c:\\Records.txt");
std::copy(std::istream_iterator<Record>(fin), std::istream_iterator<Record>(), std::back_inserter(records));
fin.close();

Hint: you'll need to create the Record class. ;)

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