C int type is (typically) represented using 32 bits (32 1's and 0's).

Since each hex digit is equivalent to 4 bits, an int can also be represented with only 8 hex 'digits' ( 4 * 8 = 32).

Converting hex to binary is easy:

• Replace each hex digit by the corresponding 4 bits

In C programs, hex integers are indicated by prefix 0x or 0X

Example:

Write 0x5CA in binary (should be 3 hex digits * 4 bits/hex digit = 12 bits)

    Convert hex 0x5CA to binary

(1) Convert each hex digit to the corresponding 4 binary bits:
   Hex:    0x     5     C     A
Binary:         0101  1101  1010


Answer: 010111011010