Introduction to programming- syntax from chapter 3

Numeric Data Types

• Whole numbers use the int type (e.g., 3, 42)

• Decimal numbers use the float type (e.g., 3.14, 0.01)

• Use type() to check a value’s data type

Type Conversion

• Mixing int and float results in a float

• Use int() to truncate a float (not round)

• Use round() to round a float to the nearest whole number or to a specified number of decimal places

String and Numeric Conversion

• Convert strings to numbers: int("32"), float("32.0")

• Convert numbers to strings: str(10), str(10.0)

Math Library Usage

• Import with import math

• Access functions like math.sqrt(x), math.sin(x), math.log(x)

• Constants like math.pi and math.e are available