ID Number: Q39783
5.00 5.10 6.00 6.00a 6.00ax 7.00 | 5.10 6.00 6.00a
MS-DOS | OS/2
Summary:
In Microsoft C versions 5.1, 6.0, 6.0a, 6.0ax, and C/C++ version 7.0,
when programming with the Microsoft graphics library, the printf()
function can be used, but it is not recommended. Instead, to do any
desired formatting, the _outtext() function should be used with a prior
call to sprintf(). You should not mix printf() calls with _outtext()
calls.
The user-defined _outtextf() function demonstrated in the program
below performs formatting and printing in one function. This function
simplifies conversion of non-Microsoft C graphics-compatible source
code to Microsoft-compatible code. An intelligent text editor could
simply do a global search and replace "printf" to "_outtextf".
More Information:
/* This following program defines and demonstrates the function
"_outtextf": */
/* Compile options needed: none
*/
#include <stdio.h>
#include <graph.h>
#include <stdarg.h>
int _outtextf (char *format,...);
void main (void);
void main (void)
{ /* Clear the screen and display "Hello, world #87!" */
_clearscreen (_GCLEARSCREEN);
_outtextf ("Hello, %s #%d!","world",87);
}
int _outtextf (char *format,...)
{ va_list arglist;
char buffer[150]; /*Must be large enough to hold formatted string*/
int retval;
va_start (arglist,format);
retval = vsprintf(buffer,format,arglist);
va_end (arglist);
_outtext (buffer);
return (retval);
}
Additional reference words: 5.10 6.00 6.00a 6.00ax 7.00