How many bytes does a string occupy in c?

Answer 1

Depends on several factors:

• number of bytes per character: 1 to 4 depending on which alphabet and character encoding you use. 1 byte per character for US-ASCII and the most common Western Europe encodings.
• length of the string: bytes per character times number of characters
• programming language: in C, the string takes up no more space than the characters do. In many other languages, there is an additional fixed overhead for the string object itself. For example in Java, a string takes 2-4 bytes plus the space taken by the characters.

Answer 2

Number of Bytes in a string are characterised by the length of the string and hence is not fixed. A number of built-in functions are available in differen languages to determine the length of the string.

In C#-

Encoding.GetByteCount(str) would return the number of bytes in a string named - 'str'.

Answer 3

As many as needed. The smallest, an empty string, occupies 1 byte (the end of string null character. Larger strings, like the empty string, always occupy n + 1 bytes, where n is the number of characters in the string. You could in principle have one string that occupied almost all of memory (except for a small space for a tiny program that used it).