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- This is legal syntax For Turbo/Borland Pascal v.6 and above:
-
- Type
- MathFunc = Function (x:Real):Real;
-
- Function MyFunc(x:Real):Real;
- begin
- MyFunc:=2 * Sin(x) + Cos(x);
- end;
-
- Function YetAnother(x:Real):Real;
- begin
- YetAnother:=Sqr(x) + x/2 + 1;
- end;
-
- Function AreaUnder(f:MathFunc; Lo, Hi:Real; Steps:Integer):Real;
- Var
- sum,
- x,
- dx : Real;
- i : Integer;
- begin
- dx:=(Hi-Lo)/Steps;
- sum:=0;
- x:=Lo;
- For i:=1 to Steps
- do begin
- sum:=sum + f(x);
- x:=x + dx;
- end;
- end;
-
- begin
- Writeln(AreaUnder(MyFunc, 0, 2*PI, 360));
- Writeln(AreaUnder(YetAnother, -1,1, 100));
- end.
-