Float Data Types & Variables in C Programming Language

Integer and character data types are incapable of storing numbers with fractional parts. Depending on the precision required, C provides two variable types for computation with "floating point" numbers, i.e. numbers with a decimal (internally a binary) point. Such numbers are called floats because the binary point can only be represented in the binary- digits expansion of the number, in which it is made to "float" to the appropriate "position" for optimal precision. (You can immediately see the difficulty of imagining a binary "point" within any...

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Character Data Types in C Programing Language

Character Data Types or variables are used to store single characters from the ASCII set. They're accommodated in a single byte. Character variables are declared and defined as in the statement below: char bee = 'b', see = 'C', ccc; This declaratory statement assigns the character constant 'b' to the char variable bee, and the character constant 'c' to the char variable named see. The char variable ccc is undefined. Character constants are single characters. They must be enclosed in right single quotes. Escape sequences may be also assigned...

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Range Modifiers for Integer Variables in C

On occasions you may need to work with strictly non-negative integers, or with integers in a shorter or longer interval than the default for ints. The following types of range modifying declarations are possible: (I) unsigned usage: unsigned int stadium_seats; This declaration "liberates" the sign bit, and makes the entire word (including the freed sign bit) available for the storage of non-negative integers. [Note: The sign bit_the leftmost bit of a memory word _ determines the sign of the contents of the word when it's set to 1, the value stored...

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Integer Data Types in C Programming Language

C program variables and constants are of four types: char, int, float and double. Before an identifier can be used in a C program its type must be explicitly declared. Here's a declaratory statement of C: int apples; This statement declares the programmer's intent that apples will store a signed integer value, i.e. apples may be either a positive or a negative integer within the range set for variables of type int. Now this range can be very much machine dependent; it depends, among other things on the word size of your machine. For most...

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