Given the parameters of malloc() and calloc(), I assume it's to express intent---malloc() is used to allocate a single structure (thus, avoiding the whole multi

Given the parameters of malloc() and calloc(), I assume it's to express intent---malloc() is used to allocate a single structure (thus, avoiding the whole multiplication issue) and calloc() for allocating an array (and initializing the entire array to a known value). Why realloc() doesn't take an items and size parameters, given that's it's almost always used to resize an array.