Program For Decimal To Binary Conversion

Code for Decimal To Binary Conversion

Code:

#include<stdio.h>
void main()
{
	int i,n1,t,w,a[100],i1=0;
	float n,f2;
	
	clrscr();
	printf("[B]PROGRAM FOR DECIMAL TO BINARY CONVERSION[/B]\n");
	printf("******************************************\n");
	printf("\n\nENTER A NUMBER:");
	scanf("%f",&n);
	w=n;
	f2=w;
	
	if(f2==n)
	{
		printf("");f2=0;
	}
	else
	{
		f2=n-f2;
	}
	n1=n;
	
	for(i=0;n1>=1;i++)
	{
		t=n1%2;
		n1=n1/2;
		i1++;
		a[i]=t;
	}
	
	printf("\n\nBINARY EQVALENT=>");
	
	for(i=(i1-1);i>=0;i--)
	{
		printf("%d",a[i]);
	}
	printf(".");
	
	for(i=1;i<=6;i++)
	{
		f2=f2*2;
		if(f2>=1)
		{
			printf("1");
			f2=f2-1;
		}
		else
		{	  printf("0");
		}
	}
	getch();
}

 

hex to octal conversion

Hi,
I am new member of this site. I am not getting how to convert Hexadecimal number into octal no. AND vice-versa.

Please give me code.

Thanks.

SUPRYA

 

Re: hex to octal conversion

Supriya,
Shabbir already provide a good article for number conversion.Go thru it for all type of number conversions.
For your reference i make a slight touch to existing (Shabbir) program.
To convert Hexadecimal no to octal no......(I just combined two functions into a single one)

Coding listed below:
//first convert Hex to Dec number
//Next convert Dec to Oct number

Code:

#include<stdio.h>
#include<string.h>
#include<math.h>
void main()
{
	char hex[100];
	double dec=0.0;
	int oct[100],temp[100];
	int len,i,j,num=0;
	
	printf("Enter a hexadecimal number");
	scanf("%s",hex);
	len=strlen(hex);
	
	for(i=0;i<len;i++)
	{
		switch(hex[i])
		{
		case '0':
			temp[i]=hex[i]-48;     //Ascii code of 0 is 48  48-48=0//
			break;
		case '1':
			temp[i]=hex[i]-48;		//Ascii code of 1 is 49  49-48=1//
			break;
		case '2':
			temp[i]=hex[i]-48;		//Ascii code of 2 is 50  50-48=2//
			break;
		case '3':
			temp[i]=hex[i]-48;		//Ascii code of 3 is 51  51-48=3//
			break;
		case '4':
			temp[i]=hex[i]-48;		//Ascii code of 4 is 52  52-48=4//
			break;
		case '5':
			temp[i]=hex[i]-48;		//Ascii code of 5 is 53  53-48=5//
			break;
		case '6':
			temp[i]=hex[i]-48;		//Ascii code of 6 is 54  54-48=6//
			break;
		case '7':
			temp[i]=hex[i]-48;		//Ascii code of 7 is 55  55-48=7//
			break;
		case '8':
			temp[i]=hex[i]-48;		//Ascii code of 8 is 56  56-48=8//
			break;
		case '9':
			temp[i]=hex[i]-48;		//Ascii code of 9 is 57  57-48=9//
			break;
		case 'A':
			temp[i]=hex[i]-55;     //Ascii code of A is 65 65-55=10//
			break;
		case 'B':
			temp[i]=hex[i]-55;		//Ascii code of B is 65 66-55=11//
			break;
		case 'C':
			temp[i]=hex[i]-55;		//Ascii code of C is 65 67-55=12//
			break;
		case 'D':
			temp[i]=hex[i]-55;		//Ascii code of D is 65 68-55=13//
			break;
		case 'E':
			temp[i]=hex[i]-55;		//Ascii code of E is 65 68-55=14//
			break;
		case 'F':
			temp[i]=hex[i]-55;		//Ascii code of F is 65 69-55=15//
			break;
		}
	}
	for(i=0,j=len;i<len;i++,j--)
		dec=dec+(temp[j-1]*pow(16,i));
	printf("The decimal equivalent is %lg \n",dec);
	num=(int)dec;
	//OCTAL CONVERSION
	for(i=0;num!=0;i++)
	{
		oct[i]=num%8;
		num=num/8;
	}
	i--;
	printf("\n Octal equivalent number:");
	for(;i>=0;i--)
		printf("%d",oct[i]);
	printf("\n");

}

 

do you know how to convert general tree to binary tree and vice versa?