5.4 "C" Language Constructs -- 1

5.4 "C" Language Constructs -- 1

• Statements
  • Include the termination semicolon
  • Compound statements { & {
  •   while( expression ) statement
    "[T]he expression is evaluated. If it is non-zero, statement is executed, and expression is re-evaluated. This cycle continues until expression becomes zero, at which point execution resumes after statement."
  •   if( expression ) statement
  • if( expression ) statement else statement
  • expression statements
  • main function
• Operators -- 1  

  *	Multiply
  /	Divide
  +	Addition (and unary)
  -	Subtraction (and unary, Negation)
  %	Remainder/mod
  	"If the quotient a/b is representable,
  	the expression (a/b)*b + a%b shall equal a."
  	ANSI "C" Standard 9899 p82.
  =	Assignment
  ++	Pre/post increment
  -	Pre/post decrement

• Comparison Operators -- 1  

  ==	Equality
  >	Greater than
  >=	Greater than or equal
  <	Less than
  <=	Less than or equal

• Data types -- 1
  • Variables must be declared.
  •   int Integer 16 or 32 bits
  •   float Floating point 32 bits
  •   double Floating point 64 bits
  • Global and auto (scope)

5.4 "C" Language Constructs -- 1