The table below shows the type declaration characters, applicable data types and the total number of bytes required for storage in the computer memory.
| Declaration Character | Variable type | Bytes required for storage in memory |
| % | INTEGER | 2 |
| & | LONG | 4 |
| ! | SINGLE | 4 |
| # | DOUBLE | 8 |
| $ | STRING | 1 byte for each character in the string |
Examples of valid variable names are below:
| Variable Names | Variable type |
| PI # | Double – precision |
| Index % | Integer |
| Counter & | Long integer |
| Student + Names $ | Single – precision |
| Value! | Single – precision |