﻿ C++ Exercises: Convert a binary number to hexadecimal number - w3resource

# 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:

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++;
}
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
```

Flowchart:

C++ Code Editor:

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