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Program For Decimal To Binary Conversion

Discussion in 'C' started by bharathidhas, Jan 21, 2007.

  1. bharathidhas

    bharathidhas New Member

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    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();
    }
     
  2. shabbir

    shabbir Administrator Staff Member

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    We already have a similar program in the following article [thread=1548]Decimal, Hex, octal and binary number inter conversion[/thread]. The program is Decimal to binary.
     
  3. supriya

    supriya New Member

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    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
     
  4. seeguna

    seeguna New Member

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    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");
    
    }
     
    Last edited by a moderator: Jun 30, 2007
  5. seiteki_cai

    seiteki_cai New Member

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

    shabbir Administrator Staff Member

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    This article is about Number conversion and if you have some specific query create a new thread with proper title in the right forum.
     

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