I'm making a simple command prompt in C, is there a better way to make it?

[faint juniper]

I'm a newbie so sorry in advance

When you enter "q", it quits. But I want to know how I can make it work better

[silver pawn]

Yes, don't do main recursion 😛

Switch case 0: makes little sense

Just do if(strcmp(u_input, "q") == 0) {} else {}

gets(u_input); is unsafe

I would recommend not using globals

This can be cleaner if you pass an input string to a handle command function

[faint juniper]

What if I want to add more commands ?

I don't want the classic elseif ladder

[silver pawn]

switching won't help that

you can either make an if-else ladder (which imo is perfectly fine), or you can make a hash table of command names and function pointers (if you don't have many keys an array of pairs can be fine too)

[bitter marten]

I see a buffer overflow waiting to happen

[faint juniper]

Lol, I already know that this can happen, is there a way to a limit and print an eror message when the string is too large ?

[bitter marten]

A good way would be to check the length of the string with strlen() and ensure it doesn't exceed the buffer space

If it does then you'd throw and error and bail out