Skip to main content

Short Sweet C Functions

One of the short and sweet function which i have written in C language is dotted_decimal_to_string(). This function takes individual fields as inputs returns dotted decimal string. This is used in taking dotted decimal values of network parameters like IP address, IP netmask, IP gateway address, DNS server IP address etc, from the webpage, where these network parameters are individual inputs from a form.
Check out the function.

char *dotted_decimal_to_string(char *pad1, char *pad2, char *pad3, char *pad4)
{
char temp[40],*ret_string;

sprintf(temp,"%s.%s.%s.%s",pad1,pad2,pad3,pad4);

ret_string = (char*)malloc(strlen(temp) + 1);
strcpy(ret_string,temp);

return ret_string;
}
The return string is a dotted decimal value for a network parameter and is used to store in configuration file or to use for setting and configuring the Network parameters.
This function stuck to my mind while i was going to bed yesterday. That means, my back-office was working for me, and giving me such a cute solution.
Otherwise I dont keep solutions short, they are always complex for little task also. :-)

Comments

R.G said…
Hi friends ! want any information about Rajasthan technical university , Kota ?

Just join the largest community of RTU students and x-students plus a lot of faculties.

Join www.heyrtu.com

Come on join the discussion !

Popular posts from this blog

Xilinx's Interview Questions

Xilinx is the world's one of largest supplier of programmable logic devices. It has started R & D department in Hyderabad, India. It has broad scope for embedded system programming in device driver in linux.

Before the interview you have to feel the Xilinx form with information containing all academic details, current/previous employer, contacts of employer( to check out info about you), current ctc, expected ctc and expected date of joining, etc.

I appeared two back to back technical interviews.

The first interview was taken by a young man look like just crossed 30's.

He asked me to tell me about myself.

Then he asked my experience.

He checked my expertise in resume.

He asked questions about RTOS, and Linux Device Drivers.
What is RTOS ? Define it.
How a linux device driver works?
How a character driver works?

He looked at my project summaries and started to ask in depth questions about each project.

After that he asked me to write to delete nth node from starting in Singly Linked Li…

Rajasthan Board 10th Results | rajedubord.nic.in | RBSE

Raj Board of Secondary Education, Rajasthan Results at rajeduboard.nic.inBoard of Secondary Education, Rajasthan Ajmer declared result of secondary examination today at 4PM official site is rajedubord.nic.in

check Secondary Examination- 2008 Result
(To be announced on July 1st, 2008 at 4:00 PM)
source
http://rajresults.nic.in/

Declared result
Praveshika Examination-2008 Result
(Announced on June 25, 2008 at 4:00 PM)

The history of the Board of Secondary Education Rajasthan (BSER) is a remarkable panorama of progressive record of the futurological vision for developing a dynamic system of various sub-systems of examinations and highlights of the academic excellence of the last four decades. The BSER took rapid strides for promotion and development of Secondary Education in Rajasthan, spread over 3,42,239 sq. km. and in more than 6000 schools located in 32 districts involving 8.5 lakhs students for Secondary and Senior Secondary Examination in the year 2000.

At present the Board is conducting …

Delete Last Char in String C program Simple Way

How to delete the last character in a string?
Lets say I have a string "/data/share/" I want to delete the last character from the string ie "/" so that output will be "/data/share"; Here are some methods to do this in C language.
one way could be use of strncat() function;
char*strncat(char*restricts1, constchar*restricts2, size_tn);
The strncat() function appends not more than n characters from s2, and
then adds a terminating `\0'.
#include
Another simple way is,
say the string variable is str_p
Then simply put
str_p[(strlen(str_p)-1)] = '\0';
And you are done;