Question

Write a program that will ask the user for a decimal number such as 18 and prints the 16 bit binary equivalent of the number: 0000 0000 0001 0010

NOTE: Your output should be a binary string formatted by nibbles (spaces every four bits): 0000 0000 0010 1110 1010 0111

1. Ask the user for a number and store it in an int variable called “number”.

2. Find out how many bits you want to use to represent this number. The project indicates 16 bits. Find the value of 2 to the power of this indicated number (2 to the power of 16-1). You may use the pow() function from the cmath library or use a loop to calculate this number (I prefer this method as it gives you a reason to practice your loops) Do not use the number for this vlaue as a constant number because this number will be changed next time the program compiles. So, we have this number and we’ll call it pow2.

3. Go into a loop (let's call this the subtraction loop) and do the following:

(1). subtract pow2 from the number you inputted. Put a flow chart here.

1. if the result is non-negative,

a. output a 1

b. replace the number with the result of the subtraction

2. if the result is negative

a. output a zero

(2). at the bottom of the subtract loop, divide the pow2 by 2

(3) continue this loop until pow2 drops to 1

Answer 1

#include<iostream>
#include<cmath>
using namespace std;

int main()
{
    int number;
    cin>>number;

    int bits=16;//number of bits used to represent the number

   long pow2 = pow(2,15);
   int result;

    int spaceCount =0;
   while(pow2>=1)//subtraction loop
   {

       if(spaceCount%4==0 && spaceCount>0)
        {
            cout<<" ";
            spaceCount=0;
        }

       result = number - pow2;
       if(result<0)//negative result
       {
           cout<<"0";
       }
       else//non-negative result
       {
           cout<<"1";
           number = result;
       }
       pow2/=2;
       spaceCount++;
   }

}

"C\Users Mayank Bhardwaj\Documents\HackerEarthla.exe" 18 0000 0000 0001 0010 Process returned (0x0 execution time 1.493 s Press any key to continue