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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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v_10_04
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1004106a
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1992-02-08
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61 lines
Listing 1
**********
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
void myfunction1(char *format, ...)
{
va_list arg_ptr;
va_start(arg_ptr,format);
vfprintf(stdout,format,arg_ptr);
va_end(arg_ptr);
}
void myfunction2(char *format, ...)
{
FILE *fp;
va_list arg_ptr;
fp = fopen("TEST.DAT","a+");
va_start(arg_ptr,format);
vfprintf(fp,format,arg_ptr);
va_end(arg_ptr);
fclose(fp);
}
void myfunction3(char *format, ...)
{
va_list arg_ptr1;
va_list arg_ptr2;
va_start(arg_ptr1,format);
myfunction1(format,arg_ptr1);
/* here I want to use the arguments of myfunction3(),
va_end(arg_ptr1); but this code does not work */
va_start(arg_ptr2,format);
myfunction2(format,arg_ptr2);
/* here I want to use the arguments of myfunction3(),
va_end(arg_ptr2); but this code does not work */
}
int main()
{
char msg[]="message";
myfunction1("\n%s=%d=%f", msg, 2, 3.0); /* this works fine */
myfunction2("\n%s=%d=%f", msg, 2, 3.0); /* this works fine */
/* the following call of myfunction3() does not work.
I want to have the same result, as
if I call myfunction1() and myfunction2() isolated */
myfunction3("\n%s=%d=%f", msg, 2, 3.0);
}
*************