typedef..... - C

*rptr is a pointer to the array "RowArray" with a size of 5.
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sachin.gadkar@gmail.com wrote:

> what does this code mean...
>
> ----------------------------------------------
> typedef int RowArray[5];

This defines a type named RowArray which is an array of 5 ints.

> RowArray *rptr;

This uses the above type to describe a pointer to an array of 5 ints.
It is equivalent to:

int (*rptr)[5];

Hope this helps.
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sachin.gadkar@gmail.com a écrit :
> what does this code mean...
>
> ----------------------------------------------
> typedef int RowArray[5];

RowArray is an alias (synonym) to define a new type "array of 5 int" to
declare and define easily variables of this type.

RowArray arr; <=> int arr[5];

> RowArray *rptr;

rptr is a variable of type pointer to RowArray, then a variable of type
"pointer to array of 5 int".
It's a way to avoid writing complex things or making errors when you
combine several types.
e.g: "int * rptr[5];". In this case, rptr is no more a pointer to array
of 5 int as expected but an array of 5 pointers to int. The correct
writing is "int (*rptr)[5];"

Regis
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