Introduction to For Loops

Question 1

what is a code block?

Answer 1

a code block is the curly brackets {}, this indicates the start and stop of a block of code in Java

Question 2

what is a local variable?

Answer 2

a local variable is a variable that is declared within the body of a method directly, outside of any other code blocks such as conditionals or loops.
a variable that can only be used within a specific scope.

Question 3

why use local variables?

Answer 3

local variables use less memory
remains the same (other parts of the program can’t change the variable)
reuse variable names

Question 4

what symbols are the arithmetic operators?

Answer 4

+,-,*,/,%

Question 5

what is this operator %

Answer 5

this is the modulus operator or remainder operator

example 7%5 = 2

Question 6

is order of operations followed in Java

Answer 6

yes, order of operations is performed the same as in basic math

Question 7

what is integer division

Answer 7

integer division is when the final result will be an integer, any remainder will be lost.

ex.
i = 5/2
i = 2

Question 8

what is a compound assignment operator?

Answer 8

a compound assignment operator is when you want to add a number to another number that is already stored in a variable, then assign the result back into the variable.
ex.
int count = 0;
count = count + 10;

Question 9

what are all of the compound assignment operators?

Answer 9

+= - adds and assigns
-= - subtracts and assigns
*= - multiple and assigns
/= - divides and assigns
%= - modulo and assigns