In C programming language, a variable is a named location in memory that stores a value that can be used and manipulated by the program. Variables in C have a type that determines the size and format of the data they can hold.
To declare a variable in C, you need to specify its data type and name. Here’s the syntax for declaring a variable:
data_type variable_name;
For example, to declare an integer variable named num, you would write:
int num;
You can also assign an initial value to the variable when you declare it, like this:
data_type variable_name = initial_value;
For example, to declare and initialize an integer variable named num with the value 10, you would write:
int num = 10;
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