Guess the user's input day of the week

Enter the first letter of the day of the week to determine the day of the week. If the first letter is the same, continue to judge the second letter.
1 # include <stdio. h>
 
2 # include <conio. h>
3 int main ()
4 {
5 char letter;
6 printf ("please input the first letter: \ n ");
7 while (letter = getch ())! = 'Q' & letter! = 'Q ')
8 {
9 printf ("% c: \ n", letter );
10 if (letter = '\ n ')
11 {
12 printf ("\ n ");
13 continue;
14}
15
16 switch (letter)
17 {
18 case 'M ':
19 printf ("Monday \ n ");
20 break;
21
22 case 'T ':
23 printf ("please input next letter: \ n ");
24 letter = getch ();
25 if (letter = 'U' | letter = 'U ')
26 printf ("Tuesday \ n ");
27 else if (letter = 'H' | letter = 'H ')
28 printf ("Thursday \ n ");
29 else
30 printf ("not weekday! \ N ");
31 break;
32
33 case 'W ':
34 printf ("Wensday \ n ");
35 break;
36
37 case 'F ':
38 printf ("Friday \ n ");
39 break;
40
41 case's ':
42 printf ("please input next letter: \ n ");
43 if (letter = getch () = 'A ')
44 printf ("Satuday \ n ");
45 else if (letter = 'U' | letter = 'U ')
46 printf ("Sunday \ n ");
47 else
48 printf ("not weekday! \ N ");
49 break;
50
51 default:
52 printf ("^ v ^ not defined yet ^ v ^ \ n ");
53 break;
54}
55 // printf ("% c \ n", letter );
56}
57 return 0;
58}
 
 




From zhengmian