How do I find the length of an array?

Question

Is there a way to find how many values an array has? Detecting whether or not I\'ve reached the end of an array would also work.

Answer 1

You have a bunch of options to be used to get a C array size.

int myArray[] = {0, 1, 2, 3, 4, 5, 7};

1) sizeof() / sizeof():

std::cout << "Size:" << sizeof(myArray) / sizeof(int) << std::endl;

2) sizeof() / sizeof(*):

std::cout << "Size:" << sizeof(myArray) / sizeof(*myArray) << std::endl;

3) sizeof() / sizeof([]):

std::cout << "Size:" << sizeof(myArray) / sizeof(myArray[0]) << std::endl;