Monetary Formatting

Often it is necessary to write monetary amounts in a standard format. We decided formatting quantities in the following way:
   1. The montande must begin with '$';
   2. The number must end with a decimal point and exactly two digits following;
   3. The digits to the left of the decimal point must separate in groups of three oir commas.

Your task in this problem is to create a program that, given two integer values ​​to dollars and cents return String formatted properly.