AP CSP: Unit 3 - Intro to Programming Test

High level programming language

• A programming language with many commands and features designed to make common tasks easier to program; encapsulated as combinations of low level commands.
• A programming language that captures only the most primitive operations available to a machine. Anything that a computer can do can be represented with combinations of low level commands.
• A generic term for a type of programming statement (usually an if-statement) that uses a Boolean condition to determine, or select, whether or not to run a certain block of statements.
• The action of doing something over and over again.
• a classic method for learning programming with commands to control movement and drawing of an on-screen robot

Consider the following incorrect program, which is intended to move the robot around the perimeter of a grid, as indicated by the drawing below. The starting position and direction of the robot is indicated in the diagram.

Line 1: 4 TIMES

Line 2: {

Line 3: MOVE_FORWARD()

Line 4: ROTATE_RIGHT()

Line 5: MOVE_FORWARD()

Line 6: MOVE_FORWARD()

Line 7: MOVE_FORWARD()

Line 8: MOVE_FORWARD()

Line 9: ROTATE_RIGHT()

Line 10: }

Given the options below, which lines should be removed so the program will work as intended?

• Line 3 and Line 4

• Lines 5, 6, 7, 8 and 9

• Line 8 and Line 9

• Line 9

Which of the following images shows the path and ending location of the robot that will result from executing the code above. The starting location of the robot is shown as dotted triangle for cases where the robot does not start and end at the same location.

REPEAT 4 TIMES {

MOVE_FORWARD()

MOVE_FORWARD()

MOVE_FORWARD()

ROTATE_RIGHT(90)

MOVE_FORWARD()

ROTATE_RIGHT(90)

MOVE_FORWARD()

ROTATE_RIGHT(90)

}

• 
• 
• 
• 

Algorithm

• A precise sequence of instructions for processes that can be executed by a computer
• To repeat in order to achieve, or get closer to, a desired goal.
• Application Program Interface: a collection of commands made available to a programmer
• Putting commands in correct order so computers can read the commands.
• Repeating actions that have a predetermined beginning, end, and increment (step interval)

What is one important naming convention of functions?

• A function name should indicate how long the function takes to run.

• Two functions with similar behavior should be given identical names to indicate the relationship between them.

• A function name should be as descriptive as possible to indicate what the function does.

• Function names should be organized alphabetically.

• The function name should begin with a number that indicates the order in which it should be executed.

Low level programming language

• A programming language that captures only the most primitive operations available to a machine. Anything that a computer can do can be represented with combinations of low level commands.
• A base-16 number system that uses sixteen distinct symbols 0-9 and A-F to represent numbers from 0 to 15.
• Repeating actions that have a predetermined beginning, end, and increment (step interval)
• A programming language with many commands and features designed to make common tasks easier to program; encapsulated as combinations of low level commands.
• a named group of programming instructions; reusable abstractions that reduce the complexity of writing and maintaining programs

Which of the following is NOT true about functions in programming?

• Functions are reusable programming abstractions.

• Functions help reduce the complexity of writing and maintaining programs.

• Functions cannot make calls to other functions within the same program.

• Once defined, a function can be called many times from different parts of a program.

• Functions help break a problem into logical chunks.

Which one of the following statements about functions is TRUE?

• A function can change names over the course of a program.

• Code can be added or removed dynamically from a function while the program is running.

• Functions can be called using different names depending on where in the program they are called.

• Two functions can be given identical names as long as their code is identical.

• Two functions in a single program can have different names but contain identical code.

A piece of code you can use over and over again

• Function
• Abstraction
• Non-Function

Loop

• The action of doing something over and over again.
• the optimal time a program takes to run on a computer, the optimal time or number of people required to create, the optimal number of resources required to run, etc
• A programming language with many commands and features designed to make common tasks easier to program; encapsulated as combinations of low level commands.
• a named group of programming instructions; reusable abstractions that reduce the complexity of writing and maintaining programs
• a collection of commands / functions, typically with a shared purpose