How to Implement the Bit Maps?

 How to Implement the Bit Maps?

Step 1:  Create a bit Map Array.
             unsigned char bit_map[2];

Step 2: Calculate the Bit Map array Index and shift index (How many bits needs to shift).
            < If the user gives  bit_position  input starts from 1> 
            bit_map_array_index = (bit_position - 1) /8    
            shift_Index = (bit_position - 1)%8

           < If the user gives  bit_position  input starts from 0>
            bit_map_array_index = bit_position /8    
            shift_Index = bit_position %8

Step 3: Set the Bit in the Bit Map using
            bit_map[bit_map_array_index] |= (1<<shift_Index)

Step 4: Clear the Bit in the Bit Map using
            bit_map[bit_map_array_index] &=  ~(1<<shift_Index)