how to encrypt text file using C language program

In this video shown that how to create a program to encrypt and decrypt a text file using C language.

[mariustrelea]

Why you don't use Ubuntu like a normal os, still running every day ???

[aaronschofield]

i dig the elevator music lol. good job.

[gaffarking]

Your way of teaching is so good... I enjoyed the programme Thanks for the video

[RTula-bw]

what ide ur are use can u tell me for run the code

[trendz]

What algorithm are you using in this program?

[darkestwolf]

Bruh, I don't have access to the damn source code wth.

[Aryan-crgr]

Can you explain the logic used in this program

[mer]

Do you know any good resources to learn encryption in C?

[shitaldhanba]

what is '5' in "numAscii = numAscii + 5"?? What 5 indicates?

[ms.morales]

I wear eye glasses 👓 I have astigmatism, enlarge fonts would work for me. Ty