Function /
Procedure

Purpose

Example

StrToInt

Converts string value to integer

iN := StrToInt(sNumber);

IntToStr

Converts integer value to string

sNumber := IntToStr(iN);

StrToFloat

Converts string value to real

rN := StrToFloat(sNumber);

FloatToStr

Converts real value to string

sNumber := FloatToStr(rN);

FloatToStrF

Converts real value to string with formatting (1 number after the decimal)

sN := FloatToStrF(rN, ffFixed, 5, 1);

Val

Converts string value to integer or real. Also checks for errors.

Val(sOriginal, iNum, iError);

Val(sOriginal, rNum, iError);

Trunc

Truncates (cuts) the decimal point

Trunc(4.5);

Round

Rounds real number to the nearest integer

Round(4.8);

Roundto

Rounds to a set power of 10

iH := Roundto(2745,3);

Inc

Increases value of variable

(You can also do this as:
iNumber := iNumber + 1;)

Inc(iNumber)

Dec

Decreases value of variable
(You can also do this as:
iNumber := iNumber - 1;)

Dec(iNumber)

Frac

Provides decimal part of real number

rK := Frac(3.54);

Sqr

Gives square of number typed in

rK := Sqr(16);

Sqrt

Gives square root of a number

rK := Sqrt(16);

Power

Raises first number to the power of the second number (13⁴)

Power(13,4)

Pi

Provides the value of pi (π)

rW := rK * Pi;

Random

Provides a random number within a range of 0 and limit-1.

Randomize;
iX := Random(100);
(iX = any number between 0 and 99)