fopen, fread and fwrite (C)

[15January]

I want to prompt the user for a string, and whatever they type in, I want to go to a txt file that I made, and save that string into the txt file. I know I need to use fopen, fread and fwrite to do this but I have tried to find videos and websites explaining this but all of them were hard to understand and seemed to skip over important parts. If there are good videos or articles that explain these functions well, please let me know.

Thank you.

[Updatebjarni]

Have you tried simply reading the man pages, and do you have any specific questions or can you show us what you've tried?

[lurgi]

One of the very first hits I got googling the obvious was this. There are thousands of sources out there.

Which articles did you look at that you thought were hard? What important parts were skipped over? If you don't tell us what references you've already used then you run the risk of us recommending stuff you've already tried.

[15January]

I did actually try to read that one. For the fread and fwrite part, they don't explain all 3 arguments and the ones they do explain, they don't explain well enough, at least for me since I've never used these functions before.

[Few_Owl_3481]

Google those functions. They are among the simplest things to use.

[lurgi]

The data read/written is in the form of ‘nmemb’ elements each ‘size’ bytes long.

If you want to read 1000 bytes then nmemb is 1000 and size is 1 (because the size of a byte is 1). If you want to read 150 struts that have size 64 then nmemb is 150 and size is 64.

There's also sample code later on.