Intro to Programming Study Guide

Question 1

T/F C++ is an example of a high level language.

Answer 1

True

Question 2

T/F C++ is an example of an interpreted language.

Answer 2

False

Question 3

What are the semantics of a programming language?

Answer 3

the meaning attached to the instructions

Question 4

What is the syntax of a programming language?

Answer 4

how instructions are written

Question 5

What are the different types of identifiers?

Answer 5

variables and constants

Question 6

Memory for variables is determined at _____ and the values are stored at ______.

Answer 6

compile time, run time

Question 7

Memory for constants is determined at _____ time and the values are stored at _____.

Answer 7

compile time, compile time

Question 8

What are the 3 differences in how we declare variables versus constants?

Answer 8

assign values to constants
declareVariables vs. DECLARE_CONSTANTS
const before declaring constants

Question 9

When would we declare an identifier a constant?

Answer 9

when we don’t change its value, when we need to use a literal

Question 10

What is a literal in C++

Answer 10

an actual value

Question 11

What are the 2 things the compiler needs to know when we declare an identifier? How do we provide this information to the compiler?

Answer 11

the data type, how much memory needs to be stored

the datatype

Question 12

What is the difference between ‘A’ and “A” in C++?

Answer 12

‘A’ - single character

“A” = C-string of 2 characters (‘A’ & ‘\0’)

Question 13

How would we declare a c-string variable which could store a name of up to 10 characters?

Answer 13

char name[11]

Question 14

How would we declare a constant named A which would store the single value ‘A’?

Answer 14

const char A = ‘A’

Question 15

What data type would we use to store the average of a sum of integers?

Answer 15

float

Question 16

What data type would we use to store a counter?

Answer 16

int

Question 17

What data type would we use to store an accumulator?

Answer 17

int or float (depending on what I am accumulating)

Question 18

What data type would we use to store a letter grade?

Answer 18

char

Question 19

Where in a C++ program do we put the declaration section?

Answer 19

Immediately following
int main()
{

Question 20

Which preprocessor directives do we need to execute the following statement:
cout &laquo_space;fixed &laquo_space;setprecision(2) &laquo_space;average;

Answer 20

iomanip
iostream
using namespace std;

Question 21

Which one do we need to use fixed?

Answer 21

include

Question 22

Why do we need to return 0 at the end of int main()?

Answer 22

let the operating system know that the program is being terminated

Question 23

What should we always do before using an accumulator? Why? If we don’t will it cause a compiler error?

Answer 23

initialize it to 0
because otherwise we will use it before assigning a value to it
no, run time error