Bronze Edition Guide - True BASIC

78 BRONZE Edition Guide
PRINT “You got”; 100 * right/num_quest; “% right.”
DATA 5
DATA What is the capital of Austria, Vienna
DATA What year did Franklin Pierce take office, 1853
DATA “What is the capital of Manitoba, Canada”, Winnipeg
DATA “How many years, on average, does a baboon live”, 20
DATA How about a gray squirrel, 5
END
The first executable statement after the initial comment lines is a READ statement. This
“reads” the first item in the first DATA statement and assigns that value to the variable
num_quest. The value of num_quest determines how many times the program goes through
the FOR-NEXT loop.
The second READ statement is inside the FOR-NEXT loop. It gets the next two values from
the list of DATA statements and assigns them to the two variables in the READ statement.
Question$ takes the value “What is the capital of Austria” and answer$ gets the value
“Vienna”. The next time through the loop, question$ and answer$ take the next two values
in the DATA statements, and so on.
Run the program to see how it works. You can give any answers you want; the dialog below
is just a sample.
What is the capital of Austria? Salzburg
No, the correct answer is Vienna.
What year did Franklin Pierce take office? 1844
No, the correct answer is 1853.
What is the capital of Manitoba, Canada? Winnipeg
Correct.
How many years, on average, does a baboon live? 20
Correct.
How about a gray squirrel? 15
No, the correct answer is 5.
You got 40 % right.
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x DATA statements may be placed anywhere in your program.
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You saw that the location of the DATA statements didn’t matter when you moved them in
the SMOKY program in the last chapter. Often they go at the very end of a program; some-