int, or integer, is a data type that represents whole numerical values. This means that if you are assigning an integer value, it cannot contain decimals.
Example of acceptable assignment of value:

int num1 = 1; 
int num2 = 42;

Example of unacceptable assignment of value:

int num1 = 1.5; //produces an error

Upon initialization, if a value is not assigned to an integer, it starts with a value of 0. Example of an int declaration that isn't assigned a value:

int num;

When assigning a value to an int, the value assignment can be a number, operation to obtain a number, a method that returns an integer or an integer property.
Examples of acceptable assignments include:

int num1 = 5 - 2; //stores 3 in num1
int num2 = num1 * 2; //takes num1 and multiplies it by 2, storing 6 in num2
int num3 = MethodReturningInt();
int num4 = Class.Property;

1. number–
2. ++number
3. –number

1. double dub
2. double dub2 = 5.5
3. dub = 1.0

1. bool eval = true
2. bool eval2 = false
3. bool eval3 = 1;true - bool eval4 = 0;false

char c1 = ' ' char c2 = '%' char c3 = 'a'

1. string s1 = “this is a string”
2. string s2
3. s2 = s1.substring(0,4)
4. string s3 = c1 + c2 + c3

1. double uhoh = (2.5 * 4.2) + 1
2. ' vs “ with strings/chars
3. bool non 1 is false, or non 0 is true idk

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