Final answer:
A programmer instructs a video game on how to function by writing algorithms using a computer language.
Step-by-step explanation:
A programmer instructs a video game on how to function by writing an algorithm using a computer language. An algorithm is a problem-solving formula that provides step-by-step instructions to achieve a desired outcome. In the context of video games, programmers use algorithms to control various aspects, such as character movements, interactions, and gameplay mechanics.
For example, a programmer might write an algorithm that determines how the player's input translates into actions within the game. They can use conditional statements, loops, and variables to create dynamic and interactive gameplay experiences. By writing these algorithms, programmers can define the rules and behavior of the game.