gottlieb@umbc5.umbc.edu (Robert Gottlieb) (06/12/91)
Hi all,
I'm having a problem with the following program. This is just a
simple menu for a grading program. Right now I'm just
using stubs to make sure it works. What happens is it will read
a char from the command line, but for some reason I think it is
getting the carriage return too. The reason I believe this is because
it hits the default case after hitting the correct case. I
tried using scanf with the * supression on the format statement,
but that gave me the same thing. I also tried getchar.
I deleted all of the functions that are called as they are just
printf statements and the menu is also just a bunch of printf's,
to save bandwidth here. Please let me know if you have any ideas how to
get this to work.
Thanks in advance.
/* Robert Allen Gottlieb Internet: gottlieb@umbc5.umbc.edu */
/* Bitnet: gottlieb@umbc2.umbc.edu */
/* */
/* */
/* The opinions herein are not those of UMBC, but rather those of */
/* my cat: Junior. */
/* */
/* "To seek the sacred river Alph */
/* To walk the caves of ice */
/* To break my fast on honey dew */
/* And drink the milk of Paradise..." */
/* */
/* - Neil Peart/RUSH "Xanadu"/A Farewell To Kings */
#include <stdio.h>
void add(FILE *grade_file);
void delete(FILE *grade_file);
void show(FILE *grade_file);
void compute(FILE *grade_file);
void menu(void);
void main (void)
{
FILE *grade_file;
char selection;
int n;
if ((grade_file = fopen("grades", "rw")) == NULL){
printf ("\nNot enough memory!\n");
exit (-1);
}
menu();
while ((n = read(0, &selection, 1)) > 0){
switch (selection){
case 'A' : add (grade_file);
break;
case 'D' : delete (grade_file);
break;
case 'S' : show (grade_file);
break;
case 'C' : compute (grade_file);
break;
case 'E' : exit (0);
break;
default : printf ("\nIncorrect selection, try again\n");
break;
}
menu();
}
fclose(grade_file);
}