Variables in C Language
Variables in C language
Variables
Variables are the names of memory locations where we store data.
Variables name is any combination of alphabet(a to z or A to Z), digit(0 -9),
and underscore(_).
Valid variable name cannot start with digit.
PROGRAM CONSUMES MEMORY IN RAM
Rules of Variables
Variables are the names of memory locations where we store data.
Variables name is any combination of alphabet(a to z or A to Z), digit(0 -9),
and underscore(_).
Valid variable name cannot start with digit.
1.
A variable name can have letters (both uppercase and
lowercase letters), digits and underscore only.
2.
The first letter of a variable should be either a letter or
an underscore. However, it is discouraged to start variable name with an
underscore. It is because variable name that starts with an underscore can
conflict with system name and may cause error.
3.
There is no rule on how long a variable can be. However,
only the first 31 characters of a variable are checked by the compiler. So, the
first 31 letters of two variables in a program should be different.
C is a strongly typed language. What this means it that,
the type of a variable cannot be changed.
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C is a strongly typed language. What this means it that,
the type of a variable cannot be changed.
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