Convert int to double by adding decimals

[Dark Ryd3r]

int a = 3 (input) digits

how can i get double b = 0.001 (output) ticksize using int a =3

it means add 3 decimals in format 0.001 which is used for ticksize

I am using

         if(digit==1) tickSize = 0.1;
         if(digit==2) tickSize = 0.01;
         if(digit==3) tickSize = 0.001;
         if(digit==4) tickSize = 0.0001;
         if(digit==5) tickSize = 0.00001;
         if(digit==6) tickSize = 0.000001;
         if(digit==7) tickSize = 0.0000001;
         if(digit==8) tickSize = 0.00000001;

but i am looking for mathematical solution,

thanks

[Haruto Rat]

tickSize=1.0/pow(10,digit);

See MathPow().

[Alexandre Borela]

Haruto Rat #:

See MathPow().

Can be simplified a bit:

pow(10,-digit)

[Alain Verleyen]

This is incorrect way to process tick size which can be different from a power of 10.