Pointer arithmetic hackThis tip submitted by Vivek Ahlawat on 2005-03-07 02:09:20. It has been viewed 41177 times.Rating of 5.5 with 173 votes Here's a way to find the size of a struct without using the sizeof operator that also demonstrates how pointer arithmetic works. struct point { int x ; int y ; } struct point pt={0 , 0 }; point *ppt= &pt; unsigned char *p1,*p2; p1= (unsigned char*)ppt; p2= (unsigned char*)++ppt; printf("%d",p2-p1); More tips Help your fellow programmers! Add a tip! |