A pointer to a member of an array of structures

Code:

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int main(void)
{
  struct circle circle[MAXCIRCLES]
  getCircle(&circle[1]);
}

void getCircle(struct circle *circ)
{
  printf("Centre: ");
  scanf("%f, %f", &(*circ).centre.x, &(*circ).centre.y);
  printf("Radius: ");
  scanf("%f", &(*circ).radius);
}

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I want to pass the circle[1] by reference to the getCircle function. My code works, but the part where i put &(*circ).centre.x etc seems a little weird. Is there a better way of doing it?

you can use the '->' operator if you think it's "better" :)

I find this weird: &(*circ).radius

Because isn't it saying the address of the value pointed to by the circ pointer? Shouldn't circ return the same thing?

Quote:

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Originally posted by ChwanRen
I find this weird: &(*circ).radius

Because isn't it saying the address of the value pointed to by the circ pointer? Shouldn't circ return the same thing?

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It says:

1) Dereference 'circ', and give me that object.
2) Now that I have that object, find the radius member of it.
3) Now give me the address of that member.

Quzah.