Operators

Operators

By Onat Mufasa

What is an operator?

An operator is a symbol that operates on a value or a variables

Operators are symbols that perform operations on variables and values. For example, + is an operator used for addition, while - is an operator used for subtraction.

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​OPERATOR	​ NAME	​ EXAMPLE
​+	Addition​	x + y​
-​	Subtraction​	x - y​
*​	Multiplication	x * y​
/​	Division​	​x / y
%​	Modulus​	​x % y

​ARITHMETIC OPERATORS

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Suppose x=5, y=2

x + y = ?

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Suppose x=5, y=2

x - y = ?

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Suppose x=5, y=2

x * y = ?

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Suppose x=5, y=2

x / y = ?

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Suppose x=5, y=2

x % y = ?

Assignment Operators

Assignment operators are used to assign values to variables.

Subject | Subject

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​OPERATOR	EXAMPLE​	EQUIVALENT TO​
​=	a = b​	​a = b
+=​	a += b​	a = a + b​
-=​	a -= b​	a = a - b​
*=​	a *= b​	a = a * b​
/=​	a /= b​	a = a / b​
%=​	a %= b​	a = a % b​

​ASSIGNMENT OPERATORS

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If a=2 and b = 7,

what is a += b ?

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If a=2 and b = 7,

what is a -= b ?

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If a=2 and b = 7,

what is a *= b ?

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If a=10 and b = 2,

what is a /= b ?

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If a=10 and b = 2,

what is a %= b ?

Relational operators

A relational operator is used to check the relationship between two operands

Subject | Subject

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​OPERATOR	MEANING	Example​
==	Is equal to​	3 == 5​ gives us false
!=	Not equal to​	3 != 5​ gives us true
>	Greater than​	3 > 5​ gives us false
<	Less than​	3 < 5​ gives us true
>=	Greater than or Equal to​	3 >=​ 5 gives us false
​<=	Less than or equal to​	3 <= 5​ gives us true

RELATIONAL OPERATORS

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If x=5 and y = 7,

what is x == y ?

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If x=5 and y = 7,

what is x != y ?

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If x=5 and y = 7,

what is x > y ?

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If x=5 and y = 7,

what is x < y ?

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If x=5 and y = 7,

what is x >= y ?

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If x=5 and y = 7,

what is x <= y ?

Logical operators

Logical operators are commonly used in decision making

Subject | Subject

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​OPERATOR	EXAMPLE​	MEANING
AND	EXPRESSION 1 AND EXPRESSION 2	LOGICAL AND. TRUE ONLY IF ALL THE OPERANDS ARE TRUE
OR	EXPRESSION 1 OR EXPRESSION 2	LOGICAL OR. TRUE IF AT LEAST ONE OF THE OPERANDS IS TRUE
NOT	NOT EXPRESSION	LOGICAL NOT. TRUE ONLY IF THE OPERAND IS FALSE

LOGICAL OPERATORS

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(3 != 5) AND (3 < 5)

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(3 == 5) AND (3 < 5)

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(3 == 5) AND (3 > 5)

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(3 != 5) OR (3 < 5)

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(3 != 5) OR (3 > 5)

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(3 == 5) OR (3 > 5)

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NOT (5 ==2)

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NOT (5 == 5)