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#include <stdio.h>
#include <ctype.h>
int main(int argc, const char *const argv[])
{
const char *message = argv[1];
const char *options;
if (!message) {
fprintf(stderr,
"dumbask: asks the user a question.\n"
"Specify a message as the first argument (quoted!).\n"
"You may optionally specify the choices as the second argument.\n"
"Default choices are YN. Exit code is 0 for first, 1 for second, etc.\n");
return 0;
}
options = argv[2] ? : "YN"; /* I _had_ to use a GNU Extension _somewhere_! */
printf("%s", argv[1]);
for (;;) {
char c = getchar();
if (c == EOF) return 0;
c = toupper(c);
int i;
for (i = 0; options[i]; i++)
if (c == toupper(options[i]))
return i;
}
}
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