Arkar-Aung

package trikke.gists;

import android.graphics.Typeface;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.style.BackgroundColorSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.RelativeSizeSpan;
import android.text.style.StrikethroughSpan;
import android.text.style.StyleSpan;

Arkar-Aung

-module (calculator).
-export ([exponential/2, multiply/2]).

multiply(_, 0) -> 1;
multiply(Num, 1) -> Num;
multiply(Num, Exp) -> Num + multiply(Num, Exp-1).

exponential(_, 0) -> 1;
exponential(Base, 1) -> Base;
exponential(_, Exp) when(Exp < 0) -> throw("Bad argument");