Writing a struct to file

[crosswire]

Corrections

fwrite is an appropriate function to use instead of fprinft because it writes byte by byte but it still suffers from text mode translation. fprintf can write binary using the format string and some casting but it looks a bit indirect.

Corrections, fprintf cannot be used. I was thinking of casting the struct to a string, then writing the string, but only a part of the string would be written because a null charater may terminate the string. A string will not be read properly if it holds binary data

[leoandru]

Portability isnt a real concern for most people. It bothers me greatly as the C
programs I write normally have to compile and run on windows and a slew of
other unices. Getting the code to compile and run isnt really much trouble but
having it read data files from other platforms is always a concern.

For the scenario presented in this thread I would suggest using unsigned 16bit integers
along with the following function to save the data before writing.

uint16_t htons(uint16_t hostshort)

htons stands for host to network short, basically a function used for packing data for network traffic.

and when you are ready to read the file again unpack it via ntohs()

or to simply put it you write the file in network byte order. and read it as such.

[Billerg]

I have never seen that b4 today pogi. thanks for the info.

[codex]

That's why you should use Java, Bill!

;-)

[pogi_2nr]

blaspheme, take that talk out of the C forum!

[Billerg]

blaspheme, take that talk out of the C forum!

tell him again... away with Ja#$ from this thread .

[codex]

Ok, ok, I'm out of here ...

[Clattaclism]

lol. Thanks for all the support. U guys are all too advance - now am confused . Not to fear, ive taken in account what crosswire had said in another thread and modified the program accordingly. It work like a charm. At least i know where to take with my probs .

P.S. cant wait to get to u guys level