convert float/double to string.

Posted on 2001-08-01
Last Modified: 2008-03-10
How do I convert a floating point number to string?
Question by:Neelima
  • 2
  • 2

Author Comment

ID: 6343422
Will it help to the manipulation at bit level?
LVL 33

Expert Comment

ID: 6343518
Try this (Converting int to string)

#include <stdio.h>
#include <stdlib.h>

int main(void)
    int num=999;
    char str[6]; // a 5 character string

    sprintf(str, "%d", num);

    printf("%s\n", str);

    return EXIT_SUCCESS;

Notice of the use of %d for integer. Change that to others for double and long.

LVL 33

Expert Comment

ID: 6343561

Author Comment

ID: 6343591
If I use those options then there is rounding after 6 digits after the decimal point.I dont want that.And I dont want to give any precision too.What I want to know is if this can be manipulated at bit level?
LVL 10

Accepted Solution

makerp earned 50 total points
ID: 6343931
use this

char *_fcvt( double value, int count, int *dec, int *sign );

value: Number to be converted
count: Number of digits after decimal point
dec  : Pointer to stored decimal-point position
sign : Pointer to stored sign indicator

#include <stdlib.h>
#include <stdio.h>

void main( void )
   int  decimal, sign;
   char *buffer;
   double source = 3.1415926535;

   buffer = _fcvt( source, 7, &decimal, &sign );
   printf( "source: %2.10f   buffer: '%s'   decimal: %d   sign: %d\n",
            source, buffer, decimal, sign );

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
memory leak detection 9 71
Why isn't my scanf halting the execution of code in my C program? 6 275
SQL handling single and double quotes 3 94
Acrinis True image 2 61
An Outlet in Cocoa is a persistent reference to a GUI control; it connects a property (a variable) to a control.  For example, it is common to create an Outlet for the text field GUI control and change the text that appears in this field via that Ou…
Windows programmers of the C/C++ variety, how many of you realise that since Window 9x Microsoft has been lying to you about what constitutes Unicode ( They will have you believe that Unicode requires you to use…
The goal of this video is to provide viewers with basic examples to understand how to use strings and some functions related to them in the C programming language.
Video by: Grant
The goal of this video is to provide viewers with basic examples to understand and use nested-loops in the C programming language.

867 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now