C++ Programming Code Examples

C++ > Conversions Code Examples

Convert Hexadecimal to Binary

Convert Hexadecimal to Binary

To convert hexadecimal number to binary number in C++ programming, you have to ask to the user to enter the hexadecimal number to convert it into binary number to display the equivalent value in binary format as shown here in the following program.

Following C++ program ask to the user to enter any number in hexadecimal format to convert it into binary, then display the result on the screen:
		
#include<iostream.h>
#include<conio.h>
void main()
{
	clrscr();
	long int i=0;
	char binnum[100], hexdec[100];
	cout<<"Enter any hexadecimal number : ";
	cin>>hexdec;
	cout<<"\nEquivalent Binary value is : ";
	while(hexdec[i])
	{
		switch(hexdec[i])
		{
			case '0' : cout<<"0000";
				break;
			case '1' : cout<<"0001";
				break;
			case '2' : cout<<"0010";
				break;
			case '3' : cout<<"0011";
				break;
			case '4' : cout<<"0100";
				break;
			case '5' : cout<<"0101";
				break;
			case '6' : cout<<"0110";
				break;
			case '7' : cout<<"0111";
				break;
			case '8' : cout<<"1000";
				break;
			case '9' : cout<<"1001";
				break;
			case 'A' : cout<<"1010";
				break;
			case 'B' : cout<<"1011";
				break;
			case 'C' : cout<<"1100";
				break;
			case 'D' : cout<<"1101";
				break;
			case 'E' : cout<<"1110";
				break;
			case 'F' : cout<<"1111";
				break;
			case 'a' : cout<<"1010";
				break;
			case 'b' : cout<<"1011";
				break;
			case 'c' : cout<<"1100";
				break;
			case 'd' : cout<<"1101";
				break;
			case 'e' : cout<<"1110";
				break;
			case 'f' : cout<<"1111";
				break;
			default : cout<<"\nInvalid hexadecimal digit "<<hexdec[i];
		}
		i++;
	}
	getch();
}