KITFORMA · EDITORIAL ANSWER
Why does sizeof an array parameter return a pointer size?
KitForma editorial guide. An array-looking function parameter is adjusted to a pointer type. The callee cannot recover the caller’s element count by dividing sizeof that parameter by sizeof one element.
Step-by-step answer
An array-looking function parameter is adjusted to a pointer type. The callee cannot recover the caller’s element count by dividing sizeof that parameter by sizeof one element.
Pass the count explicitly, for example
sum(const int *values, size_t count). Compute the count at a scope owning an actual array, or retain the allocation length in a structure for dynamic storage. Validate count before indexing.
Test empty input and a three-element array; log the received count rather than inferring it from a platform-specific pointer size. Adding a bracket size to the parameter declaration does not create an automatically enforced runtime length check.Sources and verification
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