IMO it is usefull to have the "return result paradigm". You can do things like: bar(foo(x, y)) and chain function results. Notice how this applies to strcpy:

IMO it is usefull to have the "return result paradigm". You can do things like: bar(foo(x, y)) and chain function results. Notice how this applies to strcpy: char *heap_ptr, *stack_ptr; ... fn_needs_heap_ptr(strcpy(heap_ptr, stack_ptr)); Another example (dma address space != buf a.s): char *dma_ptr, *buf; ... fn_needs_dma_ptr(strcpy(dma_ptr, buf)) ... IOW, foo(strcpy(dst, src)) is VERY different than strcpy(dst, src); foo(src);