Turbo C datatypes brought to you by ACE Learning Hub, chandked@gmail.com

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C Variables, Constants and Literals
Variables
In programming, a variable is a container (storage area) to hold data.
To indicate the storage area, each variable should be given a unique name
(identifier).
Variable names are just the symbolic representation of a memory
location. For example:
• The value of a variable can be changed, hence the name variable
• Here, playerScore is a variable of int type.
• Here, the variable is assigned an integer value 95.

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C is a strongly typed language. This means that the variable type cannot
be changed once it is declared. For example:

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For example:
In C programming,
octal starts with a 0, and
hexadecimal starts with a 0x.

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4. Escape Sequences

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Basic types

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C Output
In C programming, printf() is one of the main output function.
function sends formatted output to the screen. For example,

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Output

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• To print float,
we
use %f format
specifier.
• Similarly, we
use %lf to
print double valu
es.

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Used %d format specifier inside
the scanf() function to
take int input from the user.
When the user enters an integer,
it is stored in
the testInteger variable.
Notice, that we have
used &testInteger inside scanf().
It is because &testInteger gets
the address of testInteger, and
the value entered by the user is
stored in that address.
Output

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