| Type | FV | HN | Example |
| bool | b | b | bStatus |
| char | c | c | cLetter |
| string | s | str | sMessage |
| vector | v | vList | |
| list | l | lList | |
| int | i | i | iApples |
| int (short) | i | si | iApples |
| int (long) | i | li | iApples |
| float | f | f | fCash |
| double | d | d | dCash |
| double (long) | d | ld | dCash |
| input stream | is | is | isIn |
| input file stream | if | if | ifFile |
| output stream | os | os | osIn |
| output file stream | of | of | ofFile |
| struct | o | S | oPerson |
| class | o | C | oPerson |