Use of getchar function

Program 10) This program shows the use of getchar function in an interactive enviroment.

The program displays a question of YES/NO type to the user and reads the user's response in a single character (Y or N). If the response is Y or y, it outputs the message 
                       My name is BUSY BEE
otherwise, outputs
                      You are good for nothing

                              PROGRAM
#include <stdio.h>
main( )
 {
       char answer ;
       printf("Would you like to know my name?\n") ;

       printf("Type Y for YES and N for NO: ") ;
       answer = getchar( ) ; 
       if(answer == 'Y' || answer == 'Y')
          printf("\n\nyou are good for nothing\n") ;
       getch( ) ;
 }

Output:           Would you like to know my name?
                       Type Y for YES and N for NO:  Y
                     
                        My name is Busy Bee
                   
                       Would you like know my name
                       Type Y for YES and N for NO:N         
                       You are good for nothing
  
Use of getchar function to read a character fromKeyboad 

                                      WARNING  
The getchar( ) function accepts any character keyed in. This includes RETURN and TAB. This means when we enter single character input, the newline character is waiting in the input quenue after getchar( ) returns. This could create problems when we use getchar( ) in a loop interactively. A dummy getchar( ) may be used to 'eat' the unwanted new line character. We can also use the fflush function to flush out the unwanted characters.