These limits specify that a variable cannot store any value beyond these limits, for example an unsigned character can store up to a maximum value of 255. Library Macros The following values are implementation-specific and defined with the #define directive, but these values may not be any lower than what is given here. DEV-C is a fully-featured integrated development environment (IDE) for creating, debugging and creating applications written in a popular C programming language. Even though tools for the development of C software have undergone countless upgrades over the years, a large number of developers located all around the world have expressed a wish to continue using DEV-C.
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The limits.h header determines various properties of the various variable types. The macros defined in this header, limits the values of various variable types like char, int and long.
These limits specify that a variable cannot store any value beyond these limits, for example an unsigned character can store up to a maximum value of 255.
Library Macros
The following values are implementation-specific and defined with the #define directive, but these values may not be any lower than what is given here.
C Dev Maximum 32 Bit Value Chart
Macro | Value | Description |
---|---|---|
CHAR_BIT | 8 | Defines the number of bits in a byte. |
SCHAR_MIN | -128 | Defines the minimum value for a signed char. |
SCHAR_MAX | +127 | Defines the maximum value for a signed char. |
UCHAR_MAX | 255 | Defines the maximum value for an unsigned char. |
CHAR_MIN | -128 | Defines the minimum value for type char and its value will be equal to SCHAR_MIN if char represents negative values, otherwise zero. |
CHAR_MAX | +127 | Defines the value for type char and its value will be equal to SCHAR_MAX if char represents negative values, otherwise UCHAR_MAX. |
MB_LEN_MAX | 16 | Defines the maximum number of bytes in a multi-byte character. |
SHRT_MIN | -32768 | Defines the minimum value for a short int. |
SHRT_MAX | +32767 | Defines the maximum value for a short int. |
USHRT_MAX | 65535 | Defines the maximum value for an unsigned short int. |
INT_MIN | -2147483648 | Defines the minimum value for an int. |
INT_MAX | +2147483647 | Defines the maximum value for an int. |
UINT_MAX | 4294967295 | Defines the maximum value for an unsigned int. |
LONG_MIN | -9223372036854775808 | Defines the minimum value for a long int. |
LONG_MAX | +9223372036854775807 | Defines the maximum value for a long int. |
ULONG_MAX | 18446744073709551615 | Defines the maximum value for an unsigned long int. |
Example
The following example shows the usage of few of the constants defined in limits.h file.
C++ Dev Maximum 32 Bit Values
Let us compile and run the above program that will produce the following result −