In the C programming language, which statement tells the compiler to keep doing what is in the brackets over and over and over?

How do you know that the Link to Previous feature in the Header & Footer Tools tab is active?

A) It is not grayed out like many of the other buttons on the Header & Footer Tools tab B) It displays with a dark gray background C) It displays with an orange color D) It shows with a dark black border

A change in one bit of the plaintext or one bit of the key should produce a change in many bits of the ciphertext. This is referred to as the __________ effect. ?

Fill in the blank(s) with the appropriate word(s).