CS195, Class 8: More C!

Overview
* Lab
* Leave

Admin
* Reading for Monday: Online: "About Binary Numbers"
* Homework due.  
* You can do MathLAN work during CS153 (10:00-10:50) and
  CSC151 (right before this class)

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REFLECTION

1. What should we cast?
  ((char) ch == ' ') 
vs.
  (ch == (int) ' ')

2. In what order?
  (ch == (int) ' ')
vs.
  (((int) ' ') == ch)

  (((int) ' ') = ch)
vs
  if (ch = (int) ' ')

3. 
  if (('a' <= ch) && (ch <= 'z'))
    nchar[ch-(int)'a'];
  else if (('A' <= ch) && (ch <= 'Z'))
    nchar[ch-(int)'A'];
   
4. For what values of x does the following print Yay?
 
#include <stdio.h>

main()
{
  int x;
  printf("Enter an integer: ");
  scanf("%d",&x);
  if (0 < x < 9)
    printf("Yay!\n");
  else
    printf("Boo!\n");
} /* main() */