One of the tricky question in interview comes out is How do you point to the third byte of an integer. Assumption that integer is 4 byte. Here is the code to do the same Code: #include <iostream> using namespace std; int main(int argc, char *argv[]) { int i = 35; //integer variable int *ip = &i; //Integer pointer void *vp = (int*)ip; //Void pointer for type casting char *cp = (char*)vp; //Char pointer cp++; //Point to second byte cp++; //Point to third byte return 0; } The concept is to have a void pointer to cast the integer pointer to the character pointer and increment that to point to the any byte location you wish to by simply incrementing it. Assumption char pointer is 1 byte.
