I have a typedef struct as follows:
Then I create the following:Code:typedef struct { float x, y, z; } point3d;
Then during run time I set the size:Code:point3d *vertices;
My stupid questions is and I can't seem to get this working is I want to do something along the lines of this (setting the value of x in index 3)Code:vertices = (point3d *) malloc(numberOfVertices * sizeof(point3d));
Code:vertices[3]->x = 4.5;
1) don't cast malloc()
2) show your entire code please
1. Get rid of gets(). Never ever ever use it again. Replace it with fgets() and use that instead.
2. Get rid of void main and replace it with int main(void) and return 0 at the end of the function.
3. Get rid of conio.h and other antiquated DOS crap headers.
4. Don't cast the return value of malloc, even if you always always always make sure that stdlib.h is included.
You have to use
vertices[3].x = 4.5;
Ahh of course. Bayint is right. My eyes are playing tricks on me again.
1. Get rid of gets(). Never ever ever use it again. Replace it with fgets() and use that instead.
2. Get rid of void main and replace it with int main(void) and return 0 at the end of the function.
3. Get rid of conio.h and other antiquated DOS crap headers.
4. Don't cast the return value of malloc, even if you always always always make sure that stdlib.h is included.
Yeah that worked. I'm sure I tried just using a dot initially but I guess not. Another quick question, if in the struct I had a variable 'value' which was an array of 4 ints, would that be accessed using something like
Code:verticies[3].value[2] = 5;
Yes.
