Re: [Dev-C++] switch statement

The function getchar() is a macro which leaves a char in the buffer so =
the second time throught the while loop you get the error print. Use =
getche().  Also it is better programming  to conver the keyboard input =
to an upper or lower case with the function toupper() and then use only =
a single case. Also use a do{ while()} loop to make the program easier =
for someone else to understand.
example:

  #include    <ctype.h>
  #include    <conio.h>
  #include <stdlib.h>
  #include    <stdio.h>

  int main()
  {
      int grade;
      int aCount =3D 0, bCount =3D 0;

      printf("Enter the letter grades.\n");
      printf("Enter the letter x to end input.\n");
      do
      {
          grade =3D toupper(getche());
          switch(grade)
          {
          case 'A':
              ++aCount;
              break;
          case 'B':
              ++bCount;
              break;
          case 'X':
              printf("\nend of input\n");
              break;
          default:
              printf("\nIncorrect letter grade entered.\n");
              printf("Enter a new grade.\n");
              break;

          }
      }
      while (grade !=3D 'X');

      printf("%d\n", aCount);
      printf("%d\n", bCount);

      system("PAUSE");
      return 0;
  }----- Original Message -----=20
  From: Saundra Schwarz=20
  To: dev...@li...=20
  Sent: Saturday, November 11, 2000 12:01 PM
  Subject: [Dev-C++] switch statement


  Hi,  I've been having difficulty getting my switch statements to work =
properly.  When I run the program no matter what I enter I get the =
default response.  Please help.  I've inculded a sample from my text. I =
need the switch statement to work for an assignment.

  #include <stdlib.h>

  int main()
  {
       int grade;
       int aCount =3D 0, bCount =3D 0;

       printf("Enter the letter grades.\n");
       printf("Enter the -1 to end input.\n");

       while( (grade =3D getchar()) !=3D -1)
       {
        switch(grade)
        {
         case 'a': case 'A':
              ++aCount;
              break;
         case 'b': case 'B':
              ++bCount;
              break;

         default:
              printf("Incorrect letter grade entered.");
              printf("Enter a new grade.\n");
              break;
        }
       }

       printf("%d\n", aCount);
       printf("%d\n", bCount);

       system("PAUSE");
       return 0;
  }