What are unary operators and binary operators?

What is a unary operator?

Unary operator refers to an operator that requires one variable for operation, that is, there is only one operand in the operation, also called unary operator, among which there are logical NOT operators: !, press Bit negation operator: ~, increment and decrement operators: , --, etc.

Logical NOT operator [!], bitwise negation operator [~], increment and decrement operator [ , --], negative sign operator [-], type conversion operator [( Type)], pointer operator and address operator [* and &], length operator [sizeof]

What is a binary operator?

An operator that requires two variables for an operation is called a binary operator, or an operator that requires the number of operands to be 2 is called a binary operator.

Elementary operators　

Subscript operator [[]], component operator pointing to structure member operator [->], structure member operation Symbol [.]

Arithmetic operator

Multiplication operator [*], division operator [/], remainder operator [%], addition operator 【】, subtraction operator【-】

relational operator

equal operator【==】, not equal operator【!=】, relational operator 【< > <= >= 】

Logical operator

Logical AND operator【&&】, Logical OR operator【||】, Logical NOT operator [! 】

Bitwise Operator

Bitwise AND operator [&], Bitwise XOR operator [^], Bitwise OR operator [|], Left shift operator [<<], right shift operator [>>]

Assignment operator

Assignment operator[= = -= *= /= %= >>= <<= &= |= ^=】

Comma operator

Comma operator【,】

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