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C++ Exercises: Convert a binary number to hexadecimal number

C++ For Loop: Exercise-74 with Solution

Write a program in C++ to convert a binary number to hexadecimal number.

Pictorial Presentation:

C++ Exercises: Convert a binary number to hexadecimal number

Sample Solution:-

C++ Code :

#include <iostream>
#include <math.h>
using namespace std;
 
int main()
{
  int hex[1000];
  int i = 1, j = 0, rem, dec = 0, binaryNumber;
	cout << "\n\n Convert a binary number to hexadecimal number:\n";
	cout << "----------------------------------------------------\n";
	cout << " Input a binary number: ";
	cin>> binaryNumber;
  while (binaryNumber > 0) 
  {
   rem = binaryNumber % 2;
   dec = dec + rem * i;
   i = i * 2;
   binaryNumber = binaryNumber / 10;
  }
   i = 0;
  while (dec != 0) 
  {
   hex[i] = dec % 16;
   dec = dec / 16;
   i++;
  }
  cout<<" The hexadecimal value: ";
  for (j = i - 1; j >= 0; j--)
  {
   if (hex[j] > 9) 
   {
    cout<<(char)(hex[j] + 55)<<"\n";
   } 
   else
   {
    cout<<hex[j]<<"\n";
   }
  }
}

Sample Output:

 Convert a binary number to hexadecimal number:                        
----------------------------------------------------                   
 Input a binary number: 1011                                           
 The hexadecimal value: B

Flowchart:

Flowchart: Convert a binary number to hexadecimal number

C++ Code Editor:

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Previous: Write a program in C++ to convert a binary number to decimal number.
Next: Write a program in C++ to convert a binary number to octal number.

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C++ Programming: Tips of the Day

Which is faster: Stack allocation or Heap allocation

Stack allocation is much faster since all it really does is move the stack pointer. Using memory pools, you can get comparable performance out of heap allocation, but that comes with a slight added complexity and its own headaches.

Also, stack vs. heap is not only a performance consideration; it also tells you a lot about the expected lifetime of objects.

Ref : https://bit.ly/3COrdfj