202

Question 1

What is the main function?

Answer 1

This is where the program begins execution

Question 2

How can you comment a C file?

Answer 2

// TEXT
or 
/*
TEXT
*/

Question 3

What is a short?

Answer 3

A type of integer
Shorter than a normal integer
16 bits
Can be signed and unsigned

Question 4

What is an int?

Answer 4

A normal integer
32 bits
Can be signed and unsigned

Question 5

What is a long?

Answer 5

A type of integer.
Longer than a normal integer
64 bits
Can be signed or unsigned

Question 6

What is a char?

Answer 6

A character variable
8 bits
Can be signed or unsigned

Question 7

What is a string?

Answer 7

Multiple characters one after the other.

Question 8

What is a float?

Answer 8

A floating point variable. A number with decimal places.
Single precision
32 bits
7 decimal places

Question 9

What is a double?

Answer 9

A floating point variable. A number with decimal places.
double precision
64 bits
16 decimal places

Question 10

What is a global variable?

Answer 10

Can be accessed by all parts of code.

Question 11

What is a local variable?

Answer 11

Can be accessed by only certain sections of code

Question 12

What is a literal?

Answer 12

This is when there is a number in the code that is not stored in a variable.
Specified in: Decimal, binary, hexadecimal and scientific notion

Question 13

What the arithmetic operators? What do they do?

Answer 13

Mathematical operations on binary
\+ Addition
- Subtraction
* Multiplication
/ Division
% Modulo (Finds the remainder)
\++ Increments the variable by 1
-- Decrements the variable by 1

Question 14

What is the notation for ++ and –?

Answer 14

b = 5;
b++;
b–;

IT IS NOT:
c = b++;

Question 15

What is a relational operator? What are they?

Answer 15

Compares two variables and outputs a boolean:
> Greater than
< Less than
== Equivalent
!= Not equivalent
>= Greater than or equal to
<= Less than or equal to

Question 16

What are some logical operators and their functions?

Answer 16

Does a logical operation on the overall number. A 0 is a binary 0. Any number that is not 0 is a 1.
&& AND
|| OR
! NOT

Question 17

What is a bitwise operation?

Answer 17

Does logical operations on the binary number of the number specified.

Question 18

What are some bitwise operations and their functions?

Answer 18

& AND
| OR
^ XOR
~ NOT
<< Shift left
>> Shift right

Question 19

What is an assignment operator?

Answer 19

=

This equates the variable on the left to the variables and operations on the right

Question 20

What is precedence?

Answer 20

This is the order in which operations are done:
Most important
( ) brackets
! or ~ [Read from right to left]
* or / or %
\+ or - 
Least important

Question 21

What is the specifier for a signed integer?

Answer 21

d or i

Question 22

What is the specifier for an unsigned integer?

Answer 22

u

Question 23

What is the specifier for a character integer?

Answer 23

c

Question 24

What is the specifier for a string?

Answer 24

s

Question 25

What is the specifier for a floating point?

Answer 25

F or f

Question 26

What is the specifier for a double in standard form?

Answer 26

e or E

Question 27

What is the specifier for a double in normal or exponential form?

Answer 27

g or G

The microcontroller decides to put it in either exponential or normal form

Question 28

What is the specifier for an unsigned integer in hexadecimal?

Answer 28

x or X

Question 29

What is the specifier for an unsigned integer in octadecimal?

Answer 29

o

Question 30

What does .4f mean?

Answer 30

It means a floating point with 4 decimal places