Question

How to create the gray code of the decimal number 2 in C

Answer 1

#include <stdio.h>

// Gray code is a binary numeral system where two successive values differ by only one bit.

// Function to print an 8-bit binary representation of an integer
void printBinary(int num) {
    for (int i = 7; i >= 0; i--) {
        putchar((num & (1 << i)) ? '1' : '0');
    }
}

int main() {
    int decimal = 2; // The decimal number
    int grayCode = decimal ^ (decimal >> 1); // Calculate Gray code

    printf("Decimal: %d → Binary: ", decimal);
    printBinary(decimal);
    printf("\n");

    printf("Gray code: %d → Binary: ", grayCode);
    printBinary(grayCode);
    printf("\n");

    return 0;
}



/*
run:

Decimal: 2 → Binary: 00000010
Gray code: 3 → Binary: 00000011

*/

 

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