MikroElektronika PIC Microcontrollers PIC16 Manual do Utilizador descarregar pdf (Página 73)

As already stated, destination will store the correct value only if it can properly

represent the result of the expression (that is, the result fits in destination range).

dim testA as byte

dim testB as byte

dim Cc as word

dim Sa as short

dim Sb as short

dim Sc as short

dim Saa as integer

dim Sbbbb as longint

main:

testA = 250

testB = 10

Cc = testA * testB + testB

' Cc becomes 2510;

Sb = 120

Sc = -100

Sa = Sb + Sc

' Sa becomes 20;

Sa = Sb - Sc

' Sa is short with range -127..128,

' thus, instead of 220,

' Sa becomes -36, because only

' lower 8 bits are registered

Saa = (Sb * Sc) div 13

' Saa becomes -923

Sbbbb = integer(Sb * Sc) * Sc

' Sbbbb becomes 1200000

end.

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MikroElektronika PIC Microcontrollers PIC16 Manual do Utilizador Página 73