Working with Numbers

Question 1

Integer Division

Answer 1

The result of integer division will drop the remainder

Question 2

Scientific Notation

Answer 2

“e” precedes the power-of-10 exponent

6. 02e23 equals 6.02X10^23
7. 0e-3 equals 0.001 or 1X10^-3

Question 3

Floating-point Division

Answer 3

If either or both operands in a division expression are floating-point, the result will be floating-point

Question 4

Arithmetic Precedence Rules

Answer 4

()
unary-
*, /, %
\+, -
left-to-right

Question 5

cmath

Answer 5

Standard math library with C++

Question 6

sqrt

Answer 6

Square Root

Question 7

Type Conversion

Answer 7

One data type is converted to another
Int-to-double - adds a .0
Double-to-int - drops the fraction

Question 8

Implicit Conversion

Answer 8

Automatic conversion
If an operand on either side of an arithmetic operator is a double, then result is a double
During assignments, right side is converted to the left side

Question 9

fabs

Answer 9

Absolute Value

fabs(value)

Question 10

Comparing floating-point numbers

Answer 10

“Close enough”

fabs(x-y) < 0.0001

Question 11

Epsilon

Answer 11

Difference threshold indicating floating-point numbers are equal