Thread: Borland Turbo C 2.01 Floating Point Error

Sorry if this message is in the wrong place, but I could not find a
Turbo C group.

The following program compiles with Borland Turbo C 2.01, but does not
run properly:

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

void main()
{
char cnum[] = "123.4";
float fnum;

fnum = atof(cnum);
printf("%f\n", fnum);
}


The error I get is:

" scanf : floating point formats not linked
Abnormal program termination"


Has anyone experienced these problems before, if so can I change some
settings within the compiler. Or does it mean using another compiler.
I have downloaded the Borland BCC55 FreeCommandLineTools, but I am
struggling to get it to compile my C programs (all the
instructions/help seem to be for CPP programs).

I have tried on two machines a) Pentium II 233MhZ (Laptop) and b)
Intel Celeron 800 MHz (Desktop).

Any help please.


Steve
[email protected]

You need to set the linker options to include floating-point support.

Remember, math coprocessors didn't appear until the 386, I believe, and the Pentium was the first to have math coprocessors (for hardware support of floating-point math) in all machines.

So, very old compilers didn't link floating point libraries by default -- if you need to use a float in an old compiler (or even in newer compilers that can produce true DOS programs), you must tell it you want floating point support.