Typecast
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Converting values from variables with a lower value range data type to variables with higher value range data type is done automatically (implicit).
A value is converted by a variable of higher-value data type into a variable with a data type of lower values via a cast, and if the value does not fit into the variable of the target data type then data will be lost.
Type conversion
Source data type | Target data type | Type of type conversion | Function |
Integer | Real | implicit | no |
Real | Integer | explicit Cut off the fractional part. Rounds |
Trunc Round |
Integer | String | explicit | IntToStr |
Real | String | explicit | FloatToStr FloatToStrF |
String | Integer | explicit | StrToInt |
String | Real | explicit | StrToFloat |
String | Char | explicit Access index |
no no |
Char | String | implicit | no |
by data type | by data type | Type of type conversion | Function |
QWord | Byte | explicit | Byte(QWord) |
QWord | Word | explicit | Word(QWord) |
QWord | Cardinal | explicit | Cardinal(QWord) |
QWord | Longword | explicit | Longword(QWord) |
Longword | Byte | explicit | Byte(Longword) |
Longword | Word | explicit | Word(Longword) |
Longword | Cardinal | implicit (simple value assignment) | |
Int64 | Byte | explicit | Byte(Int64) |
Int64 | Shortint | explicit | Shortint(Int64) |
Comp | Byte | explicit | Byte(Comp) |
Comp | Shortint | explicit | Shortint(Comp) |
Comp | Real | explicit | Real(Comp) |