Tacking on cryptic characters at the beginning of each variable name is unnecessary and shows that the variable name by itself isn't descriptive enough. Most languages require the variable type at declaration anyway, so that information is already available.
There's also the situation where, during maintenance, a variable type needs to change. Example: if a variable declared as "uint_16 u16foo" needs to become a 64-bit unsigned, one of two things will happen:
- You'll go through and change each variable name (making sure not to hose any unrelated variables with the same name), or
- Just change the type and not change the name, which will only cause confusion.
