need to write 4 different c functions.

HW4 Write four functions in C: ISSET (unsigned char BitSet, int BitPos) returns a 0 if the bit in the given Bit position is a 0 and a 1 if it is 1. ADDBIT (unsigned char *BitSet, int BitPos) sets the bit in the requested bit position leaving all of the other bits unchanged DELBIT(unsigned char Bitset, int BitPos deletes (i.e., sets to 0) the bit in the requested bit position leaving the others unchanged