Category : C Source Code
Archive   : BCPPTECH.ZIP
Filename : TI733.ASC

 
Output of file : TI733.ASC contained in archive : BCPPTECH.ZIP







PRODUCT : Borland C++ NUMBER : 733
VERSION : 2.0
OS : DOS
DATE : February 25, 1992 PAGE : 1/1

TITLE : How to Use Variable Arguments







/*************************************************************
Example code for using a variable number of arguments.
There is only one guaranteed way of accessing arguments passed
using the ... mechanism. The standard header file as
specified for ANSI C will provide declarations that can be used
by a function that does not know the number or types of its
arguments when it is compiled.
*************************************************************/

#include
void real_handler(const char*, va_list);
void my_error_handler(const char* format ...)
{
// ...
va_list ap;
va_start(ap,format);
real_handler(format,ap); /* get arguments */
va_end(ap);
exit(99);
}

void real_handler(const char* format, va_list ap)
{
// assume that 'format' tells us that
// three arguments, a char*, an int, and a double,
// are passed - in that order - by the va_list 'ap'
char* p = va_arg(ap,char*);
int i = va_arg(ap,int);
double d = va_arg(ap,double);
}


















  3 Responses to “Category : C Source Code
Archive   : BCPPTECH.ZIP
Filename : TI733.ASC

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

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