tc2.0

TURBO C 2.0: ANSWERS TO COMMON QUESTIONS

G e t t i n g S t a r t e d

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Q. How do I install Turbo C?

A. Run the INSTALL program from the INSTALL/HELP disk. To start

the installation, change your current drive to the one that

has the install program on it and type INSTALL. You will be

given instructions in a box at the bottom of the screen for

process.

Q. How do I run Turbo C?

A. After you have installed Turbo C, type "TC" from the DOS

prompt and you're ready to go. Chapter 2 (Getting Started)

of the Turbo C User's Guide will guide you through your

first Turbo C program.

Q. What is the difference between TC.EXE and TCC.EXE?

A. The Turbo C package comes with two compilers, an Integrated

Environment named TC.EXE and a command-line compiler named

TCC.EXE. The Integrated Environment is essentially

looks for a configuration file named TCCONFIG.TC, and

TCC.EXE looks for a file named TURBOC.CFG. See the User's

Guide, pages 40 and 143 for more information.

Q. How do I create a configuration file?

A. When you run the INSTALL program it creates a configuration

file named TURBOC.CFG for TCC.EXE. This file is just an

ASCII file which you can change with any text editor. It

contains the path information for the library and header

files for TCC.EXE to use. The INSTALL program does not

create a TCCONFIG.TC file for TC.EXE because it installs

Q. Why is Turbo C not able to find any of my #include files?

A. The compiler searches for include files in the Turbo C Include

Directories. This option is specified under the Options/Directories

menu. The INSTALL program initially sets this option to the

directory where it copied all the Turbo C *.h files.

Q. Why do I get the message:

Linker Error: Unable to open input file 'C0x.OBJ'

A. The linker searches for Turbo C start-up and library files in the

Turbo C Library Directories. This option is specified under the

Options/Directories menu. The INSTALL program initially sets this

option to a directory where it copied the start-up and library

files.

Q. How do I get Turbo C to link in my own libraries or use multiple

source files?

A. Turbo C's Project facility is designed to allow you to work with

routines are undefined?

specifyed GRAPHICS.LIB in a project file.

Q. Why does Turbo C report "Unable to open include file 'stdarg.h'"

when I try to #include <stdio.h>?

A. The most probable reason is that you have exceeded the number

of files that DOS can have open simultaneously. Add the line

FILES=20

to your DOS CONFIG.SYS file. This allows DOS to open up to 20

files at the same time. CONFIG.SYS will only be effective

Q. How do I get a listing of my source code to my printer?

A. From within the Turbo C editor hit <Ctrl><K><P>. This will

this key sequence will print the entire file in your editor.

Q. When I Make, Run, or Trace a program Turbo C sometimes goes

through the compile and link process even when the object files

are up-to-date.

A. Turbo C's MAKE logic works solely on a file's date and time

C o m m a n d - L i n e C o m p i l e r

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Q. Why is Turbo C not able to find any of my #include files?

program initially writes a configuration file (TURBOC.CFG) that

sets this to the directory where it copied all the Turbo C *.h

files.

Q. Why do I get the message:

Linker Error: Unable to open input file 'C0x.OBJ'

A. The linker searches for Turbo C start-up and library files in the

Turbo C Library Directories. This option is specified by the -L

switch. If you allow TCC to invoke the linker, it will search the

directories in the configuration file (TURBOC.CFG) written by the

INSTALL program. If you run TLINK, the configuration file is not read.

example, to compile BGIDEMO, type

G e n e r a l I / O

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Q. The '\n' in cprintf() does not return the cursor to the

beginning of the line. It only moves the cursor down one line.

A. cprintf() no longer interprets '\n' as a Carriage Return/

force the cursor to the beginning of the line, manually

insert a Carriage Return:

cprintf("\n\r");

A. Turbo C uses a FILE pointer (stdprn) defined in the STDIO.H

main()

{

fprintf(stdprn, "Hello, world\n");

Note that if your printer is line-buffered, the output is

flushed only after a '\n' is sent.

Q. I am reading and writing binary files. My program is

translating the Carriage Return (0x0D) and Line Feed (0x0A)

{

FILE *binary_fp;

char buffer[100];

binary_fp = fopen("MYFILE.BIN", "rb");

: