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Binary operators are the common ones like +, -, /, *, <, >, !=, etc.. These you use with two objects, like : 1 + 2 Unary are the ones that does not need another object, like : ++, +, --, -, ! Like var a = 5; // Not this. this is a assignment a++; //Increment a in one ++a; //Increment a in one a--; // Decrement a in one --a; // Decrement a in one !a; // Logical opposite of a +a; // Positive value of a -a; // Negative value of a
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What operators work differently when placed before rather than after an operand?
unary operators like ++,--
Rewrite the BNF of Example 3.4 to add the and -- unary operators of Java?
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What operator is a unary operator as it works with only one operand?
Yes, a unary operator is an operator that only has one operand. Examples of unary operators are negative (-), positive (+), increment (++), decrement (--), address of (&), dereference (*), logical not (!), sizeof, one's complement (~), new, and delete.
What is unary minus operator?
No. The subtraction operator is a binary operator that returns the result of subtracting the rhs operand from the lhs operand. The unary minus operator simply negates the rhs operand. int x = -5; // unary minus. x is (-5) int y = -x; // unary minus. y is (+5) y -= x; // binary minus/assign operator. y is (+10) --x; // unary decrement operator. x is (-6) y -= (-x); // binary minus/assign and unary minus operators. y is(+4)
What is plus operator is it unary or binary?
There is no unary plus in C, but if there were, it would have only one operand, unlike the binary plus which has two: x = a + b; /* binary plus */ x = + b; /* unary plus -- not in C*/ x = a - b; /* unary plus */ x = - b; /* unary minus */
