DaniWeb Forum Index > Software Development > C++

C++ RSS

ASCII to BINARY, & VICA VERCA

Please support our C++ advertiser: Intel Parallel Studio Home

•

Join Date: Apr 2004

Posts: 11

Reputation: keir.whitlock is an unknown quantity at this point

Solved Threads: 0

keir.whitlock keir.whitlock is offline

Offline

Newbie Poster

ASCII to BINARY, & VICA VERCA

Apr 14th, 2004

Can anyone help?

Does anyone know of a simple peice of code in c/c++ that will allow me to convert ASCII characters into their relevent binary code and back again?

Cheers.

•

Join Date: Mar 2004

Posts: 219

Reputation: BountyX is an unknown quantity at this point

Solved Threads: 8

BountyX

Offline

Code Guru

Re: ASCII to BINARY, & VICA VERCA

Apr 15th, 2004

•

Originally Posted by keir.whitlock

Can anyone help?

Does anyone know of a simple peice of code in c/c++ that will allow me to convert ASCII characters into their relevent binary code and back again?

Cheers.

well if you know how to get the binary equvilent for a number, take the ascii char and assign it to an int to get an interget value then convert that to binary, or use the atoi() method and convert the result from that.

to do the reverse, if you used the assigning tactic, take the binary, and get the char equvilent by assigning the interger value to the char. if you used the atoi method, just take the binary convert it to an int, and use the itoa mehtod

check out this site:
http://nickciske.com/tools/binary.php

A Hacker's Mind:
"I thought what I'd do was, I'd pretend I was one of those deaf-mutes..." - J.D.Salinger

•

Join Date: Feb 2002

Posts: 12,036

Reputation: cscgal is a glorious beacon of light

Solved Threads: 130

cscgal

Offline

The Queen of DaniWeb

Re: ASCII to BINARY, & VICA VERCA

Apr 16th, 2004

To continue where BountyX left off, to convert from integer to binary, use what I call the "calculating change" method - because it reminds me of one of the first C++ programs I learned was given 200 cents, calculate the equivalent in the smallest number of coins.

i.e. is number larger than 128, if yes, then a 1 ... is what is left larger than 64, if no, then a 0 ... is what is left larger than 32 ... and, well, you get the idea

Dani the Computer Science Gal

Follow my Twitter feed! twitter.com/daniweb

•

Join Date: Mar 2004

Posts: 77

Reputation: infamous is an unknown quantity at this point

Solved Threads: 2

infamous

Offline

Junior Poster in Training

Re: ASCII to BINARY, & VICA VERCA

Apr 16th, 2004

use the & and << operators. remember that a character is just a sequence of bits. u cant test for each bit and output the result.

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
 int main()
 {
 	char	x = 'a';
 	int y;
 
 	//  the value of 'a' in hex is 0x61, or 97 decimal
 	//  in binary, that would be:  0 1 1 0 0 0 0 1
 	//  or 64 + 32 + 1, or 2^7 + 2^6 + 2^0
 	//
 	//loop for number of bits in a character
 	//this will print out bits in reverse order
 	//least significant bit first
 	for(y = 0; y < sizeof(char) * 8; y++)   
 		printf("%c ", ( x & (1 << y) ) ? '1' : '0' );
 
 	puts("");
 	return 0;
 }
 int main()
 {
 	char	x = 'a';
 	int y;
 
 	//  the value of 'a' in hex is 0x61, or 97 decimal
 	//  in binary, that would be:  0 1 1 0 0 0 0 1
 	//  or 64 + 32 + 1, or 2^7 + 2^6 + 2^0
 	//
 	//loop for number of bits in a character
 	//this will print out bits in reverse order
 	//least significant bit first
 	for(y = 0; y < sizeof(char) * 8; y++)   
 		printf("%c ", ( x & (1 << y) ) ? '1' : '0' );
 
 	puts("");
 	return 0;
 }