function result = rtsInt2Str(num, digits)


%get the number of digits in the current number
temp = num;
current_digits = 0;
while temp >= 1
    temp = temp/10;
    current_digits = current_digits+1;
end

if current_digits > digits
    result = int2str(num);
else
    result = [];
    for i = 1:digits - current_digits
        result = [result '0'];
    end
    result = [result int2str(num)];
end