Write a function that will take in a pointer to an int (pi), a char (c) and an int (which) The function will insert the char into one of the bytes 0, 1, 2 or 3 of the int being pointed to by pi. Which int to insert into will be controlled by the int variable (which). The function will return 1 if everything was okay. It will return -1 if the pointer is NULIL And it will return 0 if the value of "which" is outside the range 0 to 3