I was given this code and asked to list how many processes it creates and some possible outputs of the code. I have no idea how these forks work and do not understand the outcome I’m getting when I run the code. I get that when fork is called it creates a child process but I’m wondering if someone can walk me through how this code actually works.

I am a university student and I am trying to get the fork command to work into the following program but for some reason when i compile it on windows it gives me this error warning: implicit declaration of function 'fork' [-Wimplicit-function-declaration] 32 | pid1=fork();.

I have a piece of C code that uses the fork() system call and I’m confused about its output. Here’s the code: