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002: Variables and Datatypes
Learning Outcomes: Concept of variable, rules of naming a variable, data types: int, float, String;
Relational Operators

Definitions/Concepts
Variable ● It is a unique memory location in the computer which holds the value we assign to it
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a=1000
here a is the variable which stores the value 1000 in it
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eg
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avg_score, t_5
● It can’t have spaces in between
● Keywords can’t be used as variable names
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e
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print can’t be used as variable
Datatype ● The type of value stored in a variable is called the datatype of the variable
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e
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a=1000 Here the data type of a is int
float- It stands for floating point or decimal numbers
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g
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6
Here, the data type of b is float
String - Anything written within quotes(single or double) is of String Data type
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g
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● We can simply create variables by assigning values to it
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● > Greater than
● < Less than
● >= Greater than or equal to
● <= Smaller than or equal to
● == Equals to
● != Not equal to

Difference between = and ==
The single equal to operator (=) is the assignment operator, which is used to give values to a variable
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Operation on Variables
● We can use the print() function to display the value of the variable on screen also
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