Answer to Question #259352 in C for Mr Z

Question

3. Using the online compiler:-

• Enter the code from the file bitwise_demo.c

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[]) {
	
	byte_t result;	
	byte_t second_byte;
	byte_t first_byte;

	int    shift;
	
	// Reading the first byte. Integer is entered then cast to byte_t.
	printf("Enter the value of the first_byte (0-255): ");
	scanf("%d", &i);
	first_byte = (byte_t)i;
	
	// Reading the second byte. Integer is entered then cast to byte_t.
	printf("Enter the value of the second_byte (0-255): ");
	scanf("%d", &i);
	second_byte = (byte_t)i;
	printf("\n\n");
	
	// The results will be printed out in hexadecimal.
	// The %X placeholder is for hexadecimal output.
	// This can be extended to %02X, i.e. a hexadecimal
	// character, 2 characters wide, with leading blanks
	// filled-in as zeros.
	
	// Bitwise inversion
	result = ~first_byte;
	printf("The value of ~(%02X) is %02X\n", first_byte, result);
	result = ~second_byte;
	printf("The value of ~(%02X) is %02X\n\n\n", second_byte, result);
	
	// Bitwise AND, OR, XOR
	result = first_byte & second_byte;
	printf("The value of (%02X) & (%02X) is %02X\n", 
		first_byte, second_byte, result);
	result = first_byte | second_byte;
	printf("The value of (%02X) | (%02X) is %02X\n", 
		first_byte, second_byte, result);
	result = first_byte ^ second_byte;
	printf("The value of (%02X) ^ (%02X) is %02X\n", 
		first_byte, second_byte, result);
		
	system("pause");
	return 0;
}

• Add this source code to your logbook.

• Run the program. You will be prompted to enter two values between 0 and 255. Initially enter 234 and 37.

• Add the output of this program to your logbook.

• Repeat this with other values of your choice.

• Write a short reflective account of the code concentrating on its functionality and comparing the outputs against the source code.

Answer 1

#include <stdio.h>
int main(int argc, char *argv[]) {
	
	byte_t result;	
	byte_t second_byte;
	byte_t first_byte;


	int    shift;
	printf("Enter the value of the first_byte (0-255): ");
	scanf("%d", &i);
	first_byte = (byte_t)i;
	printf("Enter the value of the second_byte (0-255): ");
	scanf("%d", &i);
	second_byte = (byte_t)i;
	printf("\n\n");
	
	result = ~first_byte;
	printf("The value of ~(%02X) is %02X\n", first_byte, result);
	result = ~second_byte;
	printf("The value of ~(%02X) is %02X\n\n\n", second_byte, result);
	
	// Bitwise AND, OR, XOR
	result = first_byte & second_byte;
	printf("The value of (%02X) & (%02X) is %02X\n", 
		first_byte, second_byte, result);
	result = first_byte | second_byte;
	printf("The value of (%02X) | (%02X) is %02X\n", 
		first_byte, second_byte, result);
	result = first_byte ^ second_byte;
	printf("The value of (%02X) ^ (%02X) is %02X\n", 
		first_byte, second_byte, result);
		
	system("pause");
	return 0;
}