What is the difference between declaration and definition?
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Answer Posted / durga devi sathi
Declaration of a variable means name the variable and tells
compiler that this has been present elsewhere in the program
Definition means that allocate or reserve some space and
store the value in that variable.
the variables like auto and registers, the declaration and
definition done at the same time because they are named the
variable and allocate the memory at the same time.
Ex- int a;//declaration and definition
extern int a;//only declaration
once the variable is defined it is ready to hold the data
value needed by the program
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