Increment void pointer by uint8_t,then recast to uint16_t?

Projects Programming
1

Hello,

Is it possible to increment a void pointer by uint8_t, then re-cast the pointer to uint16_t variable? Something similar to the following.

void buffer[20];
void * ptr = &buffer[0];
uint16_t lg = 64000;
((uint16_t)((uint8_t*)ptr+2)) = lg;

Thanks,

-diesel

2

Yes. But it's a lot less messy if you don't use void types.

char buffer[20];

char* ptr = buffer;

*( unsigned short*)(ptr+2) = 64000;
//buffer[2] = 0;
//buffer[3] = 250;

Careful of little vs big endian when you do this though.

3

Just curious WHY one would want to do this?