Arithmetic operators

  • The arithmetic operators in C are the same ones as in Java: 

      Operator       Meaning
 =============================
     +           Add
     -		 Subtract
     *		 Multiply
     /		 Divide
     %		 Take remainder

Arithmetic operations must use values of the same data type

  • Background info:

    • Computers can only perform arithmetic operations with operands of the same data type (code !)

  • Mixed data type operation rule:

      • The value of the narrow (= "smaller") data type is (automatically) converted to the wider (= "larger") data type

    Example: 

                2.0 (IEEE 754) + 3 (2s complement)

 There are no computer circuits that adds IEEE 754 with 2s compl codes

 The addition is performed as follows:

            2.0 (IEEE 754) + 3 (2s complement)
    ===>    2.0 (IEEE 754) + 3.0 (IEEE 754)    ===>  5.0 (IEEE 754)