How do you write a program to convert binary code to gray code using c?

Answer 1

Gray code, named after Frank Gray, a Bell Labs researcher who originally called it "reflected binary code", is used to help correct errors in digital communications. It was developed as a response to preventing desynchronized switching actions, requiring only one switch be flipped to increment or decrement a binary value represented by a hardware-based switch array.

The simplest method, without using a whole lot of CPU or brain power, is to create an array of Gray code values that correspond to their binary representation. For example, a 2-bit Gray code array would consist of the following values:

int gray2bit[]={0, 1, 3, 2};

A 3-bit Gray code array would be declared and initialized as follows:

int gray3bit[]={0, 1, 3, 2, 6, 7, 5, 4};

To find the Gray code for a particular value, simply reference that offset in the desired array:

int n=gray2bit[2]; /* results in 3 */

int m=gray3bit[6]; /* results in 5 */

See the related links for more information on Gray codes as well as sample source code that will assist you further.