Hexadecimal representation in c

 Hexadecimal representation in c :

In hexadecimal number system we use 16 different digits so its base is 16. List of all hexadecimal digits:

Hexadecimal digit	Decimal equivalent	Binary equivalent
0	0	0000
1	1	0001
2	2	0010
3	3	0011
4	4	0100
5	5	0101
6	6	0110
7	7	0111
8	8	1000
9	9	1001
A	10	1010
B	11	1011
C	12	1100
D	13	1101
E	14	1110
F	15	1111

To convert the binary number into hexadecimal number:

Make the group of four binary digits from right to left and replace the four binary digits with the equivalent hexadecimal digit using above table.

For example:

Binary number = 11000111110101

Group of four digits from right side:

to make group of four digit of left most  digit 11 , add two zero at the left side i.e. 0011

Now put the equivalent hexadecimal digit using above table

So, equivalent hexadecimal number will be 31F5