Breaking Sec

I've had to perfect my understanding of how Binary and Decimal numerical systems convert between each other. Doing it on paper as well. I believe many colleges cover it. The concept isn't tooo hard:

1. Decimal to Binary

Binary is based on a remainder system. Take example the number 18:

18
9
4
2
1

Break it down into halves. Divide each by two.

18 /2
9 /2
4 /2
2 /2
1 /2

Detect remainders...

0
1
0
0
1

Inverse...

10010 is the binary equivelant of 18 decimal.

2. Binary to Decimal

This part tends to be more difficult. You have to understand, unlike Decimal being a ten-part system.

Say you're converting 1010 binary to it's decimal form:

First, Inverse. 0101

0*(2^0) then 1*(2^1) then 0*(2^2) and lastly 1*(2^3)

0 + 2 + 0 + 8

Answer: 10

Hope you learn, thank you for reading.

I coded that last part in C++ real fast :P

Code:

#include <iostream>

using namespace std;

int main()

{

cout << "Binary was: 0101\n";

int x = 0*(2*0);

int y = 1*(2*1);

int z = 0*(2*2);

int q = 1*(2*2*2);

int a = x+y+z+q;

cout << "Converted to Dec it is: " << a;

getchar();

}

neat

Way to bring back really old posts. Still a good tut tho.

Xer0day

Enyo

Xer0day

Mute