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OS/2 Shareware BBS: 10 Tools
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QUERY.C
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C/C++ Source or Header
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1997-07-05
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/* +++Date last modified: 05-Jul-1997 */
/*
** QUERY.C - Timed query with default for batch files
**
** Usage: QUERY [Prompt_string] [X] [n]
** where: X = Default answer, `Y' or `N'
** n = Seconds to wait before using default answer
**
** Note: If any option is used, those preceding it must be specified.
** For example, to use the time out feature, both the prompt
** string and default answer must have previously been specified.
**
** public domain by Bob Stout
*/
#include <stdio.h>
#include <time.h>
#include <ctype.h>
#include <stdlib.h>
#include <conio.h>
main(int argc, char *argv[])
{
int ch = '\0', def_ch = '\0';
char *prompt = "(y/n) ";
clock_t start, limit = (clock_t)0;
if (1 < argc)
{
fputs(argv[1], stderr);
fputc(' ', stderr);
}
if (2 < argc)
{
def_ch = toupper(*argv[2]);
if ('Y' == def_ch)
prompt[1] = def_ch;
else if ('N' == def_ch)
prompt[3] = def_ch;
else def_ch = '\0';
}
fputs(prompt, stderr);
if (3 < argc)
{
start = clock();
limit = (clock_t)(CLK_TCK * atoi(argv[3]));
}
while ('Y' != ch && 'N' != ch)
{
while (!kbhit())
{
if (limit && (limit <= (clock() - start)))
{
ch = def_ch;
goto BYE;
}
}
ch = toupper(getch());
if ('Y' != ch && 'N' != ch && (1 < argc))
ch = def_ch;
};
BYE: fputc(ch, stderr);
fputc('\n', stderr);
return ('Y' == ch);
}