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What is the maximum value that can be stored in an integer in c?
if it is a signed int the the range is -32768 to 32767if its unsigned then 0 to 65535
What is the significance of declaring a constant unsigned integer?
What is the significance of declaring a constant unsigned integer?
What are the purpose of data type integer?
An integral data type is a fundamental scalar object in the host's architecture, usually 1, 2, 4, or 8 bytes in size. It represents a binary value, a series of bits, that represent integers with various ranges. It can be signed, allowing positive and negative values, or it can be unsigned, allowing only positive values. In most (or all ??) modern computers, the signed format is what we call two's-complement notation. In two's-complement notation, hardware binary adders generate the same bit pattern no matter what your signed/unsigned convention is - the only difference is in how you interpret the result, and in the meaning of the carry and overflow flag(s). Selection of signedness and size depends on what you need to do. Unsigned Ranges by Number of Bytes: 1: 0 to 255 2: 0 to 65,535 4: 0 to 4,294,967,295 8: 0 to 18,446,744,073,709,551,615 Signed Ranges by Number of Bytes: 1: -128 to +127 2: -32,768 to +32,767 4: -2,147,483,648 to +2,147,483,647 8: -9,223,372,036,854,775,808 to +9,223,372,036,854,775,807
How many numbers can be stored in a 4-byte integer system?
If all four bytes are being used for its value (i.e. this is an unsigned integer) then you have 8 * 4 = 32 bits, so your range is from 0 to 2^32 (4,294,967,296) Remember, the size of various data types in C and C++ is architecture dependent. See limits.h (/usr/include/limits.h in Linux)
Maximum value of an array?
The maximum number of elements will depend on the type of array and the available memory. An array of char requires only 1 byte per element but an array of pointers requires 4 bytes per element (8 bytes on 64-bit systems). Arrays of objects or structures would likely require more memory per element.For all practical purposes, the maximum size is 2,147,483,647 elements, which is the maximum positive range for a 4-byte integer (0x7FFFFFFF). At 1 byte per element, that works out at 2GB.
