What's the correct way to add 1 byte to a pointer in C/C++?

Question

I\'m using this code to move pointer by 1 byte now, but I\'m feeling something unclear..

int* a = (int*)malloc(sizeof(int));
void* b = ((char*)a)+1;   
         


        

Answer 1

((char*)a)++

This is one of those evil Microsoft extensions. A pointer casting expression is an rvalue, but according to the C++ language rules, the increment operator only works on lvalues. g++ refuses to compile this.