Question

Question 1

The following function header represents which programming language?
double calc_weekly_pay( double hours_worked, double pay_rate)

Question 1 options:

Python

A C-based language

FORTRAN

COBOL

Question 2

One of my favorite quotes from Jeanette Wind is "Computational thinking is using abstraction and decomposition when attacking a large complex task or designing a large complex system."
This supports using _____________ when developing programs.

Question 2 options:

Repetition structures

Assignment statements

Selection structures

Functions

Question 3

The following assignment statement exhibits which of the following?
test_1 + test_2 +test_3 + test_4 = total_score

Question 3 options:

a syntax error

a system error

a semantic error

a type conversion error

Question 4

The block of code shown below is a
def display_list(my_list):
for value in my_list:
print ("\n", value)

Question 4 options:

value returning function

a control structure

a void function

a null function

Question 5

The following assignment statement exhibits which of the following?
test_1 + test_2 +test_3 + test_4 = sum_of_scores

Question 5 options:

a syntax error

a system error

a semantic error

a totally correct statement

Question 6

The value of a constant is

Question 6 options:

set once and not changed again

able to be changed any number of times, but only under very specific circumstances

able to be changed any number of times, but only outside the function where it was originally declared

able to be changed any number of times in statically typed languages only

Question 7

In a dynamically typed language such as Python, what does the following statement do?
total = 0.0
choose as many as seem true to you

Question 7 options:

create a variable named total

assign the variable the value 0.0

bind the variable to type double

assign the variable the type int

Question 8

total = 0.0
total = "my cat sleeps all day"
The preceding sequence of statements does which of the following

Question 8 options:

changes the type of total from double to string in a dynamically typed language

changes the type of total from double to string in a statically typed language

raises an error in any language because the type conversion is invalid

works only when a special conversion function is invoked

Question 9

def calc_celsius(fahrenheit):
celsius = (5.0/9.0) * (fahrenheit - 32.0) # convert Fahrenheit to Celsius
return celsius
The preceding code is a(n)

Question 9 options:

void function definition in C

void function definition in Python

value returning function definition in C

value returning function definition in Python

Question 10

double calcMilesDriven ( double startingMiles, double endingMiles)
{
double milesDriven = 0.0 ;
milesDriven = endingMiles - startingMiles ;
return milesDriven ;
}

The preceding code is a(n)

Question 10 options:

void function definition in C

void function definition in Python

value returning function definition in C

value returning function definition in Python

Question 11

The keywords "for" and "while" are used to begin ______________ in many programming languages.

Question 11 options:

Selection statements

Repetition statements

Assignment statements

Function headers

Question 12

Both variables and constants serve which of the following purposes (select as many as are appropriate):

Question 12 options:

They are symbols that refer to concepts used in solving a problem

They point to an area in memory where a value is stored

They indicate what type of data these symbols represent

They enforce semantic integrity

They enforce syntactic integrity

Answer 1

1.

double calc_weekly_pay( double hours_worked, double pay_rate)

This represents a C Based Language

2.

This supports using _____________ when developing programs

Selection Structures

3.

test_1 + test_2 +test_3 + test_4 = total_score

This is a

Semantic error

4.

def display_list(my_list):
for value in my_list:
print ("\n", value)

The block of code shown above is a

void function

Note: at a time max we can answer only 4 question as per HomeworkLib policy.

Explanations

1. double calc_weekly_pay( double hours_worked, double pay_rate)

This is a function having name calc_weekly_pay which will return a double value.

This function takes 2 parameters hours_worked and pay_rate.

Another c function for example is given below:

int sum(int a, int b)

2.

Computational thinking is using abstraction and decomposition when attacking a large complex task or designing a large complex system.

This statement means that there is separation of concerns. It's like selecting an appropriate representation for a particular task.

3.

test_1 + test_2 +test_3 + test_4 = total_score

This is a semantic error because compiler will show error as lvalue required as left operand of assignment

Correct semantic will be

total_score = test_1 + test_2 +test_3 + test_4

4.

def display_list(my_list):
for value in my_list:
print ("\n", value)

This is a void function,as display_list is a function which is not returning anything.