# \hspace error missing number treated as zero

I have two tabular environments. To redefine the space between them, I used \hspace in the following ways:

1. \hspace[*][1cm]
2. \hspace[1cm]

Both the commands complain the same error, Missing number, treated as zero. What should I do?

• It is \hspace*{1cm} and \hspace{1cm} respectively. Use * at the start of line. – user11232 Apr 29 '14 at 2:33

1. \hspace*{1cm}
2. \hspace{1cm}