2018年4月3日 · Initially C didn't have logical operators and the binary operators were used as a substitute. When the logical operators such as && and || were added to the C language, the precedence of binary operators &, |, and ^ should have been elevated, but Kernighan and Ritchie were concerned about backwards compatibility. –

2012年7月22日 · Logical operators return either 0 or 1. The && operator returns 1 if both its operands are not 0.Else,it ...

(A 1975 C Reference Manual shows the old =-, =+, et al forms of the compound assignment operators. The first edition of The C Programming Language by Kernighan and Ritchie, published in 1978, shows the modern -=, +=, et al, but mentions the older forms under "Anachronisms".)

2010年4月4日 · I am reading a book called "Teach Yourself C in 21 Days" (I have already learned Java and C# so I am moving at a much faster pace). I was reading the chapter on pointers and the -> (arrow) operator came up without explanation. I think that it is used to call members and functions (like the equivalent of the .

2010年8月5日 · It appears that 'C' use to support operator overloading; to the sophisticated enough it still can. See Inside the C++ Object Model by Stanley B. Lippman. OMG, C++ was C! Such a thing still exists. This answer confirms the others. 'C' …

2010年4月7日 · Some of the more obscure operators in C exist solely because they allow implementation of various function-like macros as a single expression that returns a result. I would say that this is the main purpose why the ?: and , operators are allowed to exist, even though their functionality is otherwise redundant.

2013年7月31日 · The expression set >>= 1; means set = set >> 1; that is right shift bits of set by 1 (self assigned form of >> bitwise right shift operator check Bitwise Shift Operators). Suppose if set is: BIT NUMBER 31 n=27 m=17 0 set = 0000 1111 1111 1110 0000 0000 0000 0000

2016年8月10日 · What does this statement about pointer operators mean? "& can be used only with a variable, * can be used with variable, constant or expression." Hot Network Questions Some instruments (e.g. banjo and electric bass) can be fretted or fretless, other instruments are always fretted or always fretless.

The Bitwise operators are used to perform operations a bit-level or to manipulate bits in different ways. The bitwise operations are found to be much faster and are some times used to improve the efficiency of a program. Basically, Bitwise operators can be applied to the integer types: long, int, short, char and byte. Bitwise Shift Operators

2010年11月17日 · Unary operators (all have the same precedence, so sequences of operators will be evaluated left-to-right) prefix ++ and --sizeof; bitwise negation operator ~ logical negation operator ! unary sign operators -and + address-of operator & dereference operator * Cast expressions (type name) Multiplicative operators *, /, % Additive operators + and -