Ad:

C Discussion Thread
Unsolved
Views: 42732

Page 1
2
Next

You are currently viewing page 1 of this multi-page discussion thread

Permalink

Jul 22nd, 2008

-1

convert Decimal to Hexadecimal system..

Expand Post »

hi eveRyone,
I just want to have your tips for my code..

C Syntax (Toggle Plain Text)
 
#include <stdio.h>
 
main()
{
hexa = 16;
			printf("enter decimal number: ");
 
			scanf("%d",&deci);
 
			for (ctr = 1; ctr<=deci; ctr++)
 
			quotient = deci / hexa;
 
                        printf("Equivalent in Hexadecimal is %d",quotient);
 
 
			getche();
                   }
#include <stdio.h>

main()
{
hexa = 16;
			printf("enter decimal number: ");

			scanf("%d",&deci);

			for (ctr = 1; ctr<=deci; ctr++)

			quotient = deci / hexa;

                        printf("Equivalent in Hexadecimal is %d",quotient);

			
			getche();
                   }

I want to print out the numbers 10-16 in letters like this, 10=A,11=B,12=C,13=D,14=E,15=F,16=G..but i dont know how to make it coz im new with C..

Similar Threads

campuzcrazyness

Reputation Points: 6

Solved Threads: 0

Newbie Poster

Offline

17 posts
since Jan 2008

Permalink

Jul 23rd, 2008

Re: convert Decimal to Hexadecimal system..

the easiest way is to use sprintf with "%X" format specifier

C Syntax (Toggle Plain Text)
int main()
{
    char buf[255] = {0};
    int x = 1234;
    sprintf(buf,"%X", x);
    printf("%s\n", buf);
    return 0;
}
int main()
{
    char buf[255] = {0};
    int x = 1234;
    sprintf(buf,"%X", x);
    printf("%s\n", buf);
    return 0;
}

Ancient Dragon

Sponsor

Team Colleague

Featured Poster

Reputation Points: 5608

Solved Threads: 2282

Retired and Enjoying Life

Offline

21,953 posts
since Aug 2005

Permalink

Jul 23rd, 2008

Re: convert Decimal to Hexadecimal system..

wow! thanks a lot mr.,but still nothing happened..

campuzcrazyness

Reputation Points: 6

Solved Threads: 0

Newbie Poster

Offline

17 posts
since Jan 2008

Permalink

Jul 23rd, 2008

Re: convert Decimal to Hexadecimal system..

You made me laugh with your post to convert decimal to hex, including "A,B...G"
*G* ??

Anyway, your algorithm to change decimal to hexadecimal is wrong. Here's a modded version of your program, which shows what the hex value of a decimal, should be:

C Syntax (Toggle Plain Text)
#include <stdio.h>
 
int main(void)
{
   int hexa = 16, deci, quotient, ctr;
   printf("enter decimal number: ");
   scanf("%d",&deci);
 
   for (ctr = 1; ctr<=deci; ctr++)
      quotient = deci / hexa;
 
   printf("Equivalent in Hexadecimal is %d",quotient);
   printf("\n\n Try this for Hexadecimal: %X", deci);   
 
   getche();
   return 0;
}
 
Good luck with your studies.
#include <stdio.h>

int main(void)
{
   int hexa = 16, deci, quotient, ctr;
   printf("enter decimal number: ");
   scanf("%d",&deci);

   for (ctr = 1; ctr<=deci; ctr++)
      quotient = deci / hexa;

   printf("Equivalent in Hexadecimal is %d",quotient);
   printf("\n\n Try this for Hexadecimal: %X", deci);   

   getche();
   return 0;
}

Good luck with your studies.

Adak

Reputation Points: 416

Solved Threads: 181

Nearly a Posting Virtuoso

Offline

1,463 posts
since Jun 2008

Permalink

Jul 23rd, 2008

Re: convert Decimal to Hexadecimal system..

thanKs duDe!

campuzcrazyness

Reputation Points: 6

Solved Threads: 0

Newbie Poster

Offline

17 posts
since Jan 2008

Permalink

Jul 23rd, 2008

Re: convert Decimal to Hexadecimal system..

Not to be nitpicky, but getche() isn't standard C. You should use getchar() instead.

And here's a link about scanf() (or did I give you it before?)

Nick Evan

Moderator

Featured Poster

Reputation Points: 4142

Solved Threads: 394

Industrious Poster

Offline

4,132 posts
since Oct 2006

Permalink

Jul 23rd, 2008

Re: convert Decimal to Hexadecimal system..

Thank you very much dude, I appreciate that!

Can you help me with my prob?
here's my code..

C Syntax (Toggle Plain Text)
#include <stdio.h>
 
int main(void)  {
 
   int ctr, bin, quotient, deci=0, binary = 2;
   float rem;
   char mark_magic;
 
         gotoxy(28,9);printf("enter decimal number: ");
 
         scanf("%d",&deci);
         quotient = deci / binary;
 
         printf("Equivalent in Binary is ");
 
	 for(bin=0; bin <=3; bin++)
	 {
	    printf("%d",deci % 2);
            deci = deci / 2;
         }
 
         getchar();
}
#include <stdio.h>

int main(void)  {

   int ctr, bin, quotient, deci=0, binary = 2;
   float rem;
   char mark_magic;

         gotoxy(28,9);printf("enter decimal number: ");

         scanf("%d",&deci);
         quotient = deci / binary;

         printf("Equivalent in Binary is ");

	 for(bin=0; bin <=3; bin++)
	 {
	    printf("%d",deci % 2);
            deci = deci / 2;
         }

         getchar();
}

I want to print it out in binary, but the answer is being written out in reverse.

campuzcrazyness

Reputation Points: 6

Solved Threads: 0

Newbie Poster

Offline

17 posts
since Jan 2008

Permalink

Jul 23rd, 2008

Re: convert Decimal to Hexadecimal system..

Did you learn about arrays yet? You could store everything in an array and then print them out in reverse order.
You could also change the calculation. Look into the pow() function

Nick Evan

Moderator

Featured Poster

Reputation Points: 4142

Solved Threads: 394

Industrious Poster

Offline

4,132 posts
since Oct 2006

Permalink

Jul 23rd, 2008

Re: convert Decimal to Hexadecimal system..

C Syntax (Toggle Plain Text)
void printB( int num )
{
     if( num == 0 )
         return;
     else
     {
         printB( num / 2 );
         printf("%d", num % 2 );
     }
}
void printB( int num )
{
     if( num == 0 )
         return;
     else
     {
         printB( num / 2 );
         printf("%d", num % 2 );
     }
}

You could solve the problem of you binary values printing in reverse using the recursive function. Have a look the function above. You could see the before the function is called again it pushes the "num % 2" to the stack and when it return it print the values which is on top of the static that is "0%2" ........ "num%2".

Call the function as follow:

C Syntax (Toggle Plain Text)
printB( 23 );
 
/* my output
10111
*/
printB( 23 );

/* my output
10111
*/

NOTE: I wonder this would work for a long decimal number, due to overflow!

You might as well, look into some concept of code indendation, that code which you have posted has a horriable indendation! And it also give a me a nasty taste of you using a very old Turbo C compile??? Start looking at some better compiler. DEV-C++, Code::block

ssharish

Last edited by ssharish2005; Jul 23rd, 2008 at 11:40 pm.

ssharish2005

Reputation Points: 73

Solved Threads: 20

Posting Whiz in Training

Offline

253 posts
since Dec 2006

Permalink

Jul 24th, 2008

Re: convert Decimal to Hexadecimal system..

Thanks everyone, I finally got it right!

campuzcrazyness

Reputation Points: 6

Solved Threads: 0

Newbie Poster

Offline

17 posts
since Jan 2008

Page 1
2
Next

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in C Forum Timeline: hex output of fwrite-ing char array

Next Thread in C Forum Timeline: Build Failed of C code by using Xcode

DaniWeb Message

Cancel Changes

User Name
Password