No. There?s no way to tell, at runtime, how many elements are in an array parameter just by looking at the array parameter itself. Remember, passing an array to a function is exactly the same as passing a pointer to the first element.

YES.You can tell how large the array is. However, you cannot determine how many elements have been copied into it so far.

EX: Take for instance the following code.

int testList[5];
int sizeofList = sizeof(testList);
printf("sizeof list = %d", sizeofList);

The output will be: "sizeof list = 20"
Meaning that 4(int) * 5 = 20.

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