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    Data Types in C

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    Swapnil Sonar
    The document discusses primary and secondary data types in C programming. The primary data types covered are void, char, int, float, and double. Void stores no values, char stores single characters, int stores integers, float stores numbers with single precision, and double stores numbers with double precision. Secondary data types include arrays, pointers, structures, unions, and enumerated data types. Arrays store collections of similar data, pointers store memory addresses, structures group different data types, unions share common memory, and enumerated types define custom value sets.

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    Data Types in C

    Uploaded by

    Swapnil Sonar
    36 views3 pages
    The document discusses primary and secondary data types in C programming. The primary data types covered are void, char, int, float, and double. Void stores no values, char stores single characters, int stores integers, float stores numbers with single precision, and double stores numbers with double precision. Secondary data types include arrays, pointers, structures, unions, and enumerated data types. Arrays store collections of similar data, pointers store memory addresses, structures group different data types, unions share common memory, and enumerated types define custom value sets.

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    Computer Fundamental 3

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    3

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    The document discusses primary and secondary data types in C programming. The primary data types covered are void, char, int, float, and double. Void stores no values, char stores single characters, int stores integers, float stores numbers with single precision, and double stores numbers with double precision. Secondary data types include arrays, pointers, structures, unions, and enumerated data types. Arrays store collections of similar data, pointers store memory addresses, structures group different data types, unions share common memory, and enumerated types define custom value sets.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    36 views3 pages

    Data Types in C

    Uploaded by

    Swapnil Sonar
    The document discusses primary and secondary data types in C programming. The primary data types covered are void, char, int, float, and double. Void stores no values, char stores single characters, int stores integers, float stores numbers with single precision, and double stores numbers with double precision. Secondary data types include arrays, pointers, structures, unions, and enumerated data types. Arrays store collections of similar data, pointers store memory addresses, structures group different data types, unions share common memory, and enumerated types define custom value sets.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    of 3

    Programming in C

    Data types in C
    By Prof. S.M. Sonar (BE Computer) Primary Data Type 1. Void Description: Used to specify empty set containing no values. Storage Space: 0 byte. Format: (void). Range of values: ______. 2. Character (Denoted as "char" in C programming language) Description: A character denotes any alphabet, digit or special symbol used to represent in formation and it is used to store a single character. Storage space: 1 byte Format: %c Range of Values: ASCII Character Set. 3. Integer (Denoted as "int" in C programming language) Description: Integer type is used to store positive and negative integer. Storage space: 2 bytes. Format: %d Range of values: -327687 to +32767. 4. Float Description: It is used to store real number, with single precision floating point number (precision of 6 digits after decimal points.) Storage space: 4 bytes. Format: %f Range of values: -3.4*1038 to +3.4*1038.

    Programming in C

    5. Double Description: It stores real numbers with double precision. The use of double doesn't guarantee to double the number of significant digits in our result, but it improves the accuracy of the arithmetic and reduces the accumulation of rounding errors. Storage Space: 8 bytes. Format: %ld Range of values: -1.7*10308 to +1.7*10308. Secondary Data Type 1. Array: It is a collection of data of similar data type. e.g. int num [5]; Reserve a sequence of 5 location of two bytes each for storing integers. 2. Pointer: Pointer is a variable that stores the address of some other variable. e.g. int *i; The above statement declares i as pointer to integer data type. 3. Structure: A structure is a collection of data of different data types under one name. e.g. Struct employees { char Name[10]; int Age; int Salary; } 4. Union:

    Programming in C It is a collection of data of different types sharing common memory space. e.g. Union item { int m; float x; char c; }; 5. Enumerated Data types: This data types gives us an opportunity to invent your own data type and define what values the variable of this data type can take. Example: enum colors { red, green, blue, cyan }; colors foreground, background; Here the declaration has two parts: a) The first part declares the data type and specifies its possible values. b) The second part declare variable of this data type. Now we can give the values to these variables: foreground=red; background=blue; But remember we can't use values that aren't in the original declaration. Thus, the following declarations cause error. foreground=yellow; Note: Secondary data type has been given in detail later.

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