#include
#include
int main()
{
char line[10];
while (1) {
printf("Enter add(a), delete(d), quit(q): ");
fgets(line, sizeof(line), stdin);
switch (line[0]) {
case 'a':
printf("Add\n");
break;
case 'd':
printf("Delete\n");
break;
case 'q':
printf("Quit\n");
exit(0);
defualt:
printf("Error:Bad command %c\n", line[0]);
break;
}
}
}