C2007-09-20
Precedence and Order of Evaluation in C
Table below summarizes the rules for precedence and associativity of all operators, including those that we have not yet discussed. Operators on the same line have the same precede
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C2007-09-20
Conditional Expressions in C
The conditional expression, written with the ternary operator ``?:'', provides an alternate way to write this and similar constructions. In the expression
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Assignment Operators and Expressions in C
The assignment operator makes the code easier to understand, since the reader doesn't have to check painstakingly that two long expressions are indeed the same, or to wonder why th
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Bitwise Operators in C
C provides six operators for bit manipulation; these may only be applied to integral operands, that is, char, short, int, and long, whether signed or unsigned.
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Increment and Decrement Operators in C
C provides two unusual operators for incrementing and decrementing variables. The increment operator ++ adds 1 to its operand, while the decrement operator -- subtracts 1. We have
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Type Conversions in C (String to Integer, isdigit() etc)
When an operator has operands of different types, they are converted to a common type according to a small number of rules. In general, the only automatic conversions are those tha
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C2007-09-20
Relational and Logical Operators in C
The relational operators are > >= <
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Arithmetic Operators in C
The binary arithmetic operators are +, -, *, /, and the modulus operator %. Integer division truncates any fractional part. The expression
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Declarations in C
All variables must be declared before use, although certain declarations can be made implicitly by content. A declaration specifies a type, and contains a list of one or more varia
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Constants and escape sequences in C
An integer constant like 1234 is an int. A long constant is written with a terminal l (ell) or L, as in 123456789L; an integer constant too big to fit into an int will also be take
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Data Types and Sizes in C
There are only a few basic data types in C: char, int, float, double.
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External Variables and Scope in C
The variables in main, such as line, longest, etc., are private or local to main. Because they are declared within main, no other function can have direct access to them. The same
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