Arduino-オペレーター

演算子は、特定の数学関数または論理関数を実行するようコンパイラーに指示する記号です。 C言語は組み込みの演算子が豊富であり、次の種類の演算子を提供します-

算術演算子

変数Aが10を保持し、変数Bが20を保持すると仮定します-

リンク：/arduino/arduino_arithmetic_operators [例を表示]

Operator name	Operator simple	Description	Example
assignment operator	=	Stores the value to the right of the equal sign in the variable to the left of the equal sign.	A = B
addition	PLUS	Adds two operands	A PLUS B will give 30
subtraction	-	Subtracts second operand from the first	A - B will give -10
multiplication	*	Multiply both operands	A* B will give 200
division	/	Divide numerator by denominator	B/A will give 2
modulo	%	Modulus Operator and remainder of after an integer division	B % A will give 0

変数Aが10を保持し、変数Bが20を保持すると仮定します-

link：/arduino/arduino_comparison_operators [例を表示]

Operator name	Operator simple	Description	Example
equal to	==	Checks if the value of two operands is equal or not, if yes then condition becomes true.	(A == B) is not true
not equal to	!=	Checks if the value of two operands is equal or not, if values are not equal then condition becomes true.	(A != B) is true
less than	<	Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true.	(A < B) is true
greater than	>	Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true.	(A > B) is not true
less than or equal to	⇐	Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true.	(A ⇐ B) is true
greater than or equal to	>=	Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true.	(A >= B) is not true

変数Aが10を保持し、変数Bが20を保持すると仮定します-

リンク：/arduino/arduino_boolean_operators [例を表示]

Operator name	Operator simple	Description	Example
and	&&	Called Logical AND operator. If both the operands are non-zero then then condition becomes true.	(A && B) is true
or
Called Logical OR Operator. If any of the two operands is non-zero then then condition becomes true.	(A		B) is true
not	!	Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false.	!(A && B) is false

変数Aが60を保持し、変数Bが13を保持すると仮定します-

link：/arduino/arduino_bitwise_operators [例を表示]

Operator name	Operator simple	Description	Example
and	&	Binary AND Operator copies a bit to the result if it exists in both operands.	(A & B) will give 12 which is 0000 1100
or			Binary OR Operator copies a bit if it exists in either operand
(A	B) will give 61 which is 0011 1101	xor	^
Binary XOR Operator copies the bit if it is set in one operand but not both.	(A ^ B) will give 49 which is 0011 0001	not	~
Binary Ones Complement Operator is unary and has the effect of 'flipping' bits.	(~A ) will give -60 which is 1100 0011	shift left	<<
Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand.	A << 2 will give 240 which is 1111 0000	shift right	>>

変数Aが10を保持し、変数Bが20を保持すると仮定します-

link：/arduino/arduino_compound_operators [例を表示]

Operator name	Operator simple	Description	Example
increment	PLUSPLUS	Increment operator, increases integer value by one	APLUSPLUS will give 11
decrement	—	Decrement operator, decreases integer value by one	A-- will give 9
compound addition	PLUS=	Add AND assignment operator. It adds right operand to the left operand and assign the result to left operand	B PLUS= A is equivalent to B = BPLUS A
compound subtraction	-=	Subtract AND assignment operator. It subtracts right operand from the left operand and assign the result to left operand	B -= A is equivalent to B = B - A
compound multiplication	*=	Multiply AND assignment operator. It multiplies right operand with the left operand and assign the result to left operand	B= A is equivalent to B = B A
compound division	/=	Divide AND assignment operator. It divides left operand with the right operand and assign the result to left operand	B/= A is equivalent to B = B/A
compound modulo	%=	Modulus AND assignment operator. It takes modulus using two operands and assign the result to left operand	B %= A is equivalent to B = B % A
compound bitwise or		=	bitwise inclusive OR and assignment operator
A	= 2 is same as A = A	2	compound bitwise and