Question

When passing an array to a function, pass only:

a) Group of answer choices
b) The number of elements
c) The pointer to the heap
d) The first element

Answer 1

d) The first element

Step-by-step explanation:

This is because an array name in C/C++ can decay into a pointer to its first element when passed to a function. The function then operates on the array using a pointer.

For example:

void myFunction(int arr[], int size) {

// Code that uses the array through the pointer

}

// ...

int main() {

int myArray[5] = {1, 2, 3, 4, 5};

myFunction(myArray, 5);

return 0;

}

In the example, myArray decays into a pointer to its first element when passed to myFunction, and the function can access the elements using that pointer and the specified size.

Answer 2

In programming, when passing an array to a function, the address of the first element is passed, which the function uses to access the entire array.

Step-by-step explanation:

When passing an array to a function in most programming languages, particularly C and C++, you're actually passing a pointer to the first element of the array. This is because the name of the array represents the address of its first element, so the correct answer to the question is d) The first element. The function will then assume that it can access consecutive elements of the array by advancing the pointer. It's important to also pass the number of elements explicitly if the function needs to know the array's size, as this information is not available from the pointer itself.