55
SGN (X)
This function will give the value of +1 if X is positive, 0 if X is zero, and -1 if X is negative.
So SGN(4.3)=1; SGN(0)=0; SGN(-276)=-1
Example:
A=6 press Enter
PRINT SGN (A); SGN (A-A) press Enter
1 0
INT (X)
This converts arguments which are not whole into the largest whole number below the
argument. So INT (5.9)=5; also INT (-5.9)=-6. Note that with negative arguments, the
absolute value of the result returned by INT will be greater than that of the argument.
Example:
PRINT INT (-6.7) press Enter
-7
RND (X)
This will produce a random number between 1 and X if X is positive.
Example:
PRINT RND (19) press Enter
You will get a number between 1 and 19. RND (0) will give you a number between 0
and 1.
Note:X cannot be negative.
STRING FUNCTIONS
We can also use functions to act on strings. Have a look at the following:
Note: From now on, the Enter key sign will be deleted for simplicity. Remember to
press the Enter key after each line of entry.
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