| **Navigation:**  [[introduction.htm|Language Reference]] > 3 - Variable Declarations > Data Types >====== UNSIGNED (unsigned integer) ====== | [[signed 16 32 bit signed integer .htm|{{btn_prev_n.gif|Previous page}}]][[introduction.htm|{{btn_home_n.gif|Return to chapter overview}}]][[sreal four byte signed floating point .htm|{{btn_next_n.gif|Next page}}]] | | || | label | **UNSIGNED(**[//initial value//]**)** | [,**DIM( )**] [,**OVER( )**] [,**NAME( )**] [,**EXTERNAL**] [,**DLL**] [,**STATIC**] | | | | [,**THREAD**] [,**AUTO**] [,**PRIVATE**] [,**PROTECTED**] | {{blk2blue.jpg|blk2blue.jpg}} | **UNSIGNED** | An unsigned integer which is a LONG. | | //initial value// | A numeric constant. If omitted, the initial value is zero, unless the AUTO attribute is present. | | **DIM** | Dimension the variable as an array. | | **OVER** | Share a memory location with another variable. | | **NAME** | Specify an alternate, "external" name for the field. | | **EXTERNAL** | Specify the variable is defined, and its memory is allocated, in an external library. Not valid within FILE, QUEUE, or GROUP declarations. | | **DLL** | Specify the variable is defined in a .DLL. This is required in addition to the EXTERNAL attribute. | | **STATIC** | Specify the variable's memory is permanently allocated. | | **THREAD** | Specify memory for the variable is allocated once for each execution thread. Also implicitly adds the STATIC attribute on Procedure Local data**.** | | **AUTO** | Specify the variable has no //initial value//. | | **PRIVATE** | Specify the variable is not visible outside the module containing the CLASS methods. Valid only in a CLASS. | | **PROTECTED** | Specify the variable is not visible outside base CLASS and derived CLASS methods. Valid only in a CLASS. | **UNSIGNED** declares an unsigned integer which is a LONG. This is not actually a data type but an EQUATE defined in EQUATES.CLW. The UNSIGNED data type is most useful for prototyping Windows API calls which take a LONG (or ULONG) parameter in their 32-bit version. **Example:** **Count1 UNSIGNED   !Declares a LONG**