问题
How do I allocate memory to integer type (*a)[2] ? I am comfortable doing it with **a, *a etc. etc., also *a[2], but this looks different.
Can somebody help out ? Thanks in advance.
回答1:
Same as for any pointer type, say you have
int (*a)[2];
a pointer a to arrays of 2 int, then you allocate
a = malloc(number_of_rows * sizeof *a);
to get a block of number_of_rows * (2 * sizeof (int)) bytes.
You then access that with
a[i][j]
with 0 <= i < number_of_rows and 0 <= j < 2.
来源：https://stackoverflow.com/questions/16474366/how-to-allocate-memory-to-int-a2