473,396 Members | 1,998 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,396 software developers and data experts.

Data File Handling question related to putting of pointer

How does the compiler know where to put pointer like in following example-
details of student-1. Roll no.,2.Student name ,3.Percentage

123ABC98213def88458fgh100

In this example how will the compiler know to put pointer after '...98'as there is int datatype next to it which could also come in category of percentage though it is part of roll no. of second student.
Aug 30 '15 #1
1 1135
weaknessforcats
9,208 Expert Mod 8TB
The compiler is not involved with the data. Only you are in control of this situation.

The example you show is readable only if you already know what the data format is. If you don't know what the format is, hen this is just gibberish.

Look at at your struct that was used to read the data. That is what told the compiler how to fill the struct variables.

If this is an array of struct variables, then read this: http://bytes.com/topic/c/insights/77...rrays-revealed
Aug 30 '15 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

9
by: Hans-Joachim Widmaier | last post by:
Hi all. Handling files is an extremely frequent task in programming, so most programming languages have an abstraction of the basic files offered by the underlying operating system. This is...
2
by: Domenico Discepola | last post by:
Hello all. Before my arrival at my current employer, our consultants physically set up our MSSQL 7 server as follows: drive c: contains the mssql engine drive d: contains the transaction log...
1
by: Sean W. Quinn | last post by:
Hey folks, I have a question regarding file handling, and the preservation of class structure. I have a class (and I will post snippets of code later in the post) with both primitive data...
5
by: Chathu | last post by:
Hello everyone........... I have a problem on retriving a content of a binary file I wrote into. My program user structures, dynamic allocation of memory and files. I take the infomation into a...
4
by: BHARAT | last post by:
Hi I am a little bit new to C's advanced topics: I need help in file handling. I have Turbo C and I wrote a simple program to write data to file: #include<stdio.h> #include<dir.h>...
9
by: lokeshrajoria | last post by:
hello everybody, i need some help in binary file handling in perl. can anybody give me some information about binary file. actully i am reading data from some text file and extracting some usefull...
8
shashankraj1231
by: shashankraj1231 | last post by:
I am trying to write a program in "c" language that accepts file as input and prints only those lines of the file, that contains at least one vowel. I have written the code so far as ...
7
by: Kvaibhav01 | last post by:
I'm trying to make a Quiz program based on C++'s Data File Handling capablities. I've attached the code in .txt file and I wonder why I'm getting the error identifier bScience cannot have a type...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
0
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.