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Page 344 Tutorial 6 C++ Variables Meet Visual Basic As a Visual Basic programmer, you are hopefully familiar with the Visual Basic data types. Their characteristics are shown in Table T6-1. TYPE BYTES SIGN RANGE Byte 1 Unsigned 0 to 255 Boolean 2 NA True of False Integer 2 Signed 32768 to 32767 Long 4 Signed 2147483648 to 2147483647 Single 4 Signed ±1.4E-45 to ±3.4E38 Double 8 Signed ±4.9E-324 to ±1.7E308 Currency 8 Signed See VB docs not applicable to API Decimal 14 Signed See VB docs not applicable to API Date 8 NA See VB docs not applicable to API Object 4 NA String * NA Length varies by string Variant 16 NA Depends on contained variable User-Defined * Varies depending on definition * = Varies Table T6-1: Characteristics of Visual Basic data types C Data Types When a Visual Basic programmer first looks at a C/C++ declaration, it can be more than a little bit intimidating.1 The C language seems to have billions of different data types. How can you possibly figure out a Visual Basic equivalent for each one?
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