Since my machine is 64-bit bit, these many 1’s are added so that final number is 64-bit. The signed numbers are normally represented in 2’s complement form in your machine or processor. Though size of any signed and unsigned data type is same, it posses different range of values that can be stored in variables. What makes range for signed and unsigned types different? Printf("ii= %2d, is= %2d, iu= %2u\r\n", ii, is, iu) // Print integer value Printf("\r\nUsing integer data types:\r\n") Printf("cc= %2d, cs= %2d, cu= %2d\r\n", cc, cs, cu) // Print decimal equivalent Printf("cc= %2c, cs= %2c, cu= %2c\r\n", cc, cs, cu) // Print ASCII value Printf("\r\nUsing character data types:\r\n")
The OS is 32-bit and target processor is Intel i-3 5005U.
#BASIC DATA TYPES IN C CODE#
Below code is written and compiled in Visual Studio. Here is an example on use of data types in C.
#BASIC DATA TYPES IN C FREE#
“Each compiler is free to choose appropriate sizes for its own hardware, subject only to the the restriction that shorts and ints are at least 16 bits, longs are at least 32 bits, and short is no longer than int, which is no longer than long”. The C standard does not specify any size limits for the data types except the character. Typically it is 4 byte (32-bit) on 16/32-bit compiler, but it might vary from compiler to compiler. The size of long integer ( signed or unsigned long) depends upon compiler. The size of short integer ( signed or unsigned) is often 2 bytes long for most of the compilers. The character data type can store the ASCII character or equivalent number of that ASCII character. The unsigned type of character can hold only positive values and hence defined there range as 0 to 255. The signed type of character can hold negative values and hence defined there range as -128 to +127. The size of char ( signed or unsigned) is always 1 byte irrespective of the compiler. Unsigned int temp // variable 'temp' can hold the integer value Signed int temp // variable 'temp' can hold the integer value Int temp // variable 'temp' can hold the integer value It is possible that size of integer is 4 byte (32-bits) for 64-bit processor. However, this might not be the case every time. Had been the compiler 32-bit wide, the size of int type would have been 4 bytes (32-bits). In above table, the integer is 2 byte (or 16-bit) wide and hence compiler is also 2 byte or 16-bit wide. Normally, integer will be the natural size for a particular machine (or processor).
In the above defined table, it is assumed that compiler is 16-bit or is generating a code for 16-bit target processor. In short, size of the data type depends upon compiler and the target processor for which compiler is generating the code. A single compiler can have support for multiple processor’s (or targets) and based on the selected target, compiler defines the size of data types. However, the code compiled by compiler is targeted for certain type of Microprocessor or Microcontroller. The size of the data type is compiler dependent and so is the Range. The primary data types are listed below: Type *The word int can be omitted in such declarations, and typically it is. In addition, there are a number of qualifiers that can be applied to these basic types. Int: an integer, typically reflecting the natural size of integers on the host machine There are only 4 basic data types defined in C and they are:Ĭhar: a single byte, capable of holding one character in the local character set Primary Data Types : These are the standard data types defined in C language. The data types in C programming are mainly divided into 2 types: Primary Data Types and Derived Data Types. We will discuss everything about the data types in this article. C offers wide range of data types, each can have a unique type of data and certain predefined range. It can also be a set of values or set of characters. Data types can be used with the variables and functions to define the type of data they can hold. One of the most powerful feature of C programming is the “Data Types”.
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