Vtech PreComputer Power Pad Plus User Manual - Page 50
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MORE ABOUT GROUPS - GOSUB ... RETURN How much is 10 degrees Celsius in Fahrenheit? What is 100 degrees Fahrenheit in Celsius? Here's a program that gives you the answers. It uses the GOSUB and RETURN statements to create a group of instructions that can be executed from various parts of the program. Remember when you use a GOSUB, the program branches to the line number that you specify in the statements that will be executed sequentially until a RETURN statement is encountered. At that point the program will resume at the next statement following the GOSUB. Confusing? Not really, but first some more background about our problem. The formula for converting Celsius to Fahrenheit is: F=(9/5*C)+32 The formula for converting Fahrenheit to Celsius is: C=(F-32)*5/9 Now for the program! Type: New 10 INPUT "ENTER THE CELSIUS TEMP";C 20 GOSUB 500 30 INPUT "ENTER THE FAHRENHEIT TEMP";F 40 GOSUB 600 50 END 500 F=(C*9/5)+32 510 PRINT "THE FAHRENHEIT TEMP IS";F 520 RETURN 600 C=(F-32)*5/9 610 PRINT "THE CELSIUS TEMP IS";C 630 RETURN RUN 46