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Decr Instruction RobotWare-OS Decr - Decrements by 1 Decr is used to subtract 1 from a numeric variable or persistent. Example Decr reg1; 1 is subtracted from reg1, i.e. reg1:=reg1-1. Arguments Decr Name Name Data type: num The name of the variable or persistent to be decremented. Example TPReadNum no_of_parts, "How many parts should be produced? "; WHILE no_of_parts>0 DO produce_part; Decr no_of_parts; ENDWHILE The operator is asked to input the number of parts to be produced. The variable no_of_parts is used to count the number that still have to be produced. Syntax Decr [ Name ’:=’ ] < var or pers (INOUT) of num > ’;’ RAPID reference manual - part 1a, Instructions A-R 81
