There are some values which do not change during the execution of the program. These values are called constants. Constants are of fixed value that remain unchanged during the execution of a program, and are used in assignment of statements. Constants are stored in variables. Syntax of constant declaration: Const datatype var_name = value; Example …
A character constant consists of a single digit or a single special symbol enclosed within a pair of single inverted commas. The maximum length of a character constant can be 1 character. e.g. –> ‘a’, ‘i’ , ‘5’, ‘=’. There are some character sequence constants which are used in C to represented special action, these …
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An integer constant refers to a sequence of digits. It could be either positive or negative. and must have at least one digit. It mustn’t have a decimal point. No commas or blank are allowed within an integer constant. The allowable range for integer constants is -32767 to 32767. There are three types of integer …
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Real constants are often called Floating Point constants. It has three parts: 1. A sign (+ or -) preceding the number portion (optional). 2. A number portion (representing the base). 3. An exponent portion following the number portion (optional). This starts with E or E followed by an integer. The integer may be preceded by …
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A logical constant can have either of two values either true or false. In C a non-zero value is always treated as true whereas zero is treated as false. The logical constants are very useful in evaluating logical expressions and complex condition. A group of character enclosed within a pair of double inverted commas (” …
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