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If the environment variable DC_LINE_LENGTH exists and contains an integer that is greater than 1 and less than , the output of number digits (according to the output base) will be restricted to this value, inserting thereafter backslashes and newlines. The default line length is 70.
For example, += and -= are often called plus equal(s) and minus equal(s), instead of the more verbose "assignment by addition" and "assignment by subtraction". The binding of operators in C and C++ is specified (in the corresponding Standards) by a factored language grammar, rather than a precedence table. This creates some subtle conflicts.
On the TI-83/84 certain variables such as Ans and the finance variables have fixed addresses in RAM, making them much faster to access than the 27 letter variables. Ans acts as a special variable containing the result of the last evaluated code. A line with just a variable will still be evaluated and its contents stored in Ans as a result.
Other conventions are less common: Common Lisp and Macsyma/Maxima use Basic-like operators for numerical values, except for inequality, which is /= in Common Lisp and # in Macsyma/Maxima. Common Lisp has multiple other sets of equality and relational operators serving different purposes, including eq, eql, equal, equalp, and string=. [6]
The C++ Standard Library includes in the header file functional many different predefined function objects, including arithmetic operations (plus, minus, multiplies, divides, modulus, and negate), comparisons (equal_to, not_equal_to, greater, less, greater_equal, and less_equal), and logical operations (logical_and, logical_or, and logical_not).
The result of shifting by a bit count greater than or equal to the word's size is undefined behavior in C and C++. [2] [3] Right-shifting a negative value is implementation-defined and not recommended by good coding practice; [4] the result of left-shifting a signed value is undefined if the result cannot be represented in the result type. [2]
In C++, the C++20 revision adds the spaceship operator <=>, which returns a value that encodes whether the 2 values are equal, less, greater, or unordered and can return different types depending on the strictness of the comparison. [3] The name's origin is due to it reminding Randal L. Schwartz of the spaceship in an HP BASIC Star Trek game. [4]
The latter are less common than an array of pointers, and their syntax may be confusing: char * pc [ 10 ]; // array of 10 elements of 'pointer to char' char ( * pa )[ 10 ]; // pointer to a 10-element array of char