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Mathematical Library Functions (QBASIC)
The functions which are used to process the numeric data are called mathematical functions. Mathematical library functions of QBasic are described below with examples.
SQR
It calculate and return the square root of non-negative number.
Example:
CLS
PRINT SQR(144)
END
Output
12
MOD
It returns reminder, when one number is divided by another number.
Example:
CLS
PRINT 9 MOD 5
END
Output
4
INT
It returns an integer of a give number.
Example:
CLS
n = 27.5
PRINT INT(n)
END
Output
27
CINT
It returns nearest rounding numeric value from -32768 to 32767 as argument.
Example:
CLS
PRINT CINT(3.49)
PRINT CINT(3.51)
END
Output
3
4
SGN
It returns the sign of numeric value. If the number is positive it returns 1, if the number is negative, it returns -1 and if the number is 0 it returns 0.
Example:
CLS
PRINT SGN(15)
PRINT SGN(-15)
PRINT SGN(0)
END
Output
1
-1
0
ABS
It returns corresponding positive value.
Example:
CLS
PRINT (-15.3)
END
Output
15.3
SIN, COS & TAN
SIN, COS and TAN returns sign value, cosine value and tangent value respectively.
Example:
CLS
PRINT SIN(1.5)
PRINT COS(1.5)
PRINT TAN(1.5)
END
Output
.997495
.0707372
14.10142
sdf
4040