Week 1

Question 1

What are the 4 most common types of the C language for performing arithmetic calculations?

Answer 1

Char
Int
Float
Double

Question 2

What is a type?

Answer 2

A rule that defines how to store values in memory and which operations are admissible on those values.

Question 3

What is a char?

Answer 3

Occupies one byte and can store a small integer value, a single character, or a single symbol

Question 4

What is an int?

Answer 4

Occupies one word and can store an integer value. In a 32 bit environment, an int occupies 4 bytes.

Question 5

What is a float?

Answer 5

Typically occupies 4 bytes and can store a single-precision, floating point number

Question 6

What is a double?

Answer 6

Typically occupies 8 bytes and can store a double-precision, floating point number.

Question 7

What is a size specifier?

Answer 7

Adjusts the size of the int and double types

Question 8

What are the 3 type int size specifiers?

Answer 8

Short
Long
Long Long

Question 9

How many bits does a short int contain?

Answer 9

At least 16 bits

Question 10

How many bits does a long int contain?

Answer 10

At least 32 bits

Question 11

How many bits does a long long int contain?

Answer 11

At least 64 bits

Question 12

What is a const qualifier?

Answer 12

Any type that can hold a constant value. A constant value cannot be changed. To qualify a type as holding a constant value, use the keyword const. A const is unmodifiable.

Question 13

What are the 2 integral types? What are the 2 floating-point types?

Answer 13

Integral types: char, int

Floating-point types: float, double

Question 14

How are integral types stored?

Answer 14

The integral types (char and int) are stored in equivalent binary form. Binary form represents the value stored exactly. The integral types are short, long, signed, unsigned, and plain ints.

Question 15

How are floating-point types stored?

Answer 15

Stored as tiny and big values from being separated into three components: a sign, an exponent, and a significand.

Question 16

How are characters and symbols stored?

Answer 16

In char types. Characters and symbols cannot be represented in binary form.

Question 17

What is a value range?

Answer 17

The number of bytes allocated for a type that determines the range of values that the type can store

Question 18

What is a declaration?

Answer 18

A program variable with a type. The type identifies the properties of the variable

Ex. [const] type identifier [=initial value]

Question 19

How do you group multiple declarations that share the same type?

Answer 19

Separate the identifiers with commas.

Ex. char children, digit
int nPages,nBooks,nRooms
float cashFare, height, weight
double loan, mortgage

Question 20

We may select any identifier as a variable as long as it satisfies the following name conventions:

Answer 20

• starts with a letter or underscore
• contains any combination of letters, digits, and underscores
• contains less than 32 characters
• is not a C reserved word