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172: Sidetrip 


You can, if you want, use conditional-operator expressions in place of 
if statements, as in the following example, in which one of the two 
display expressions is evaluated: 

#include  
main ( ) { 
  int change; 
  scanf ("%i", &change); 
  change == 1 
    ? 
    printf ("The price has changed by %i point.\n", change) 
    : 
    printf ("The price has changed by %i points.\n", change) 
    ; 
} 

 
This program not only reintroduces needless duplication, but also 
introduces a conditional-operator expression that is not inside any other 
expression that can make use of the value produced.  Instead, the 
conditional-operator expression forms a complete statement.  Such use of 
the conditional operator is considered poor programming practice, and your 
C compiler should issue a warning.