In this shot, we will discuss how to convert a decimal number to a hexadecimal number in C++.

When we convert a decimal number to a hexadecimal number, we divide the number by $16$. Then, we divide the quotient by $16$ again. We repeat the process until the quotient becomes $0$.

We will take the hexadecimal in type `string`. Hexadecimal number values range between $0$ to $9$ and then $A$ to $F$.

Let's look at the hexadecimal values and their equivalent decimal counterparts.





# 
## Code

Take a look at the code snippet below to understand this better.

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

int main() {
  int decimal, remainder, product = 1;
  string hex_dec = "";
  cin >> decimal;
  while (decimal != 0) {
    remainder = decimal % 16;
    char ch;
    if (remainder >= 10)
      ch = remainder + 55;
    else
      ch = remainder + 48;
    hex_dec += ch;
  
    decimal = decimal / 16;
    product *= 10;
  }
  reverse(hex_dec.begin(), hex_dec.end());
  cout << "The number in the hexadecimal form is: " <<hex_dec;
}


>Enter a number in the input section above.
# 
## Explanation


* In *line 6*, we initialize the variables `decimal`, `remainder`, and `product`.

* In *line 7*, we initialize
the variable `hex_dec` as a string. This string will store the result in reverse order.

* In *line 9*, we take `decimal` as input.

* From *lines 10 to 20,* we initialize a while loop. In the loop, we calculate the remainders and quotients as discussed in the above illustration to convert the decimal number to its hexadecimal equivalent. In *line 12*, we initialize a variable `ch` of `char` type that stores each of the hexadecimal values for the decimal digits.

* In *line 22,* we use the `reverse()` function to print the output in hexadecimal form. 

* In *line 23,* we print the output, i.e., the hexadecimal equivalent of the decimal number.

This way, we can convert the value of a decimal number to a hexadecimal number.

How to convert a number from decimal to hexadecimal in C++

Code

Explanation