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While programming in C++, I often confuse both "+=" and "=+", the former being the operator I actually mean. Visual Studio seems to accept both, yet they behave differently and is a source for a lot of my bugs. I know that a += b is semantically equivalent to a = a+b, but what does "=+" do?
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A more detailed explanation on how these work is this: OR ( || ) - If EITHER or BOTH sides of the operator is true, the result will be true. AND ( && ) - If BOTH and ONLY BOTH sides of the operator are true, the result will be true. Otherwise, it will be false.
The | operator evaluates both operands even if the left-hand operand evaluates to true, so that the operation result is true regardless of the value of the right-hand operand. The conditional logical OR operator ||, also known as the "short−circuiting" logical OR operator, computes the logical OR of its operands.
Less than or equal to operator is a logical operator that is used to compare two numbers.
The && (logical AND) operator indicates whether both operands are true. If both operands have nonzero values, the result has the value 1 . Otherwise, the result has the value 0 . The type of the result is int .
=+ is really = + (assignment and the unary + operators).
In order to help you remember +=, remember that it does addition first, then assignment. Of course that depends on the actual implementation, but it should be for the primitives.
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