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start:
print "What would you like to do?"
print "(1) Add two numbers"
print "(2) Subtract two numbers"
print "(3) Multiply two numbers"
print "(4) Divide two numbers"
input a
cls
if a=1 then gosub add
if a=2 then gosub sub
if a=3 then gosub mul
if a=4 then gosub div
add:
print "What is the first number?"
input b
print "What is the second number?"
input c
print "The answer is"
print b+c
goto start
sub:
print "What is the first number?"
input b
print "What is the second number?"
input c
print "The answer is"
print b-c
goto start
mul:
print "What is the first number?"
input b
print "What is the second number?"
input c
print "The answer is"
print b*c
goto start
div:
print "What is the first number?"
input b
print "What is the second number?"
input c
print "The answer is"
print b/c
goto start


I wrote this simple calculator as my first program...but for some when it adds,subtracts, etc...i won't print a decimal, only a whole number. Can anyone figure out why this is happening please?

Thanks in advance.
Rich

Simple. You just need to put a # symbol after every one of your variables. That will turn it into a float, which can have decimals.

Also, you shouldn't use goto. Instead, replace start: with do, and goto start with loop. That will make it have a do loop, which can be exited out of and is in general better programming technique.

When it hits the loop, it goes back to the do.

Also, what you can do is make a subroutine named input, and in that subroutine have this:

That way you can just do a gosub input at the beginning of each of the other subroutines, and save typing, as well as making it easier for future modification. Try to do this whenever you have the same bit of code repeating a few times.

Thanks Ocean Runner.