It's still not comparable to mkdir and find. The arbitrary limit in C is not fixed by the code. So if you run out of space on a 32-bit machine with sizeof(size

It's still not comparable to mkdir and find. The arbitrary limit in C is not fixed by the code. So if you run out of space on a 32-bit machine with sizeof(size_t) == 4, you can run the same code on a 64-bit machine with sizeof(size_t) == 8. With mkdir and find, you have to change the code to do this. You can translate any Turing Machine into a single C program, which will behave identically so long as you have enough memory. You cannot do this if you need to change the program when the amount of memory changes.