I am a fan of "const", because it is useful in expressing API constraints and behavior. Contrast against putting "register" on a function parameter being useless because either it's passed by value, then it's a copy anyway and register is meaningless to the caller, or it's a pointer, in which case it again does nothing because you already have a pointer (and something somewhere is very confused.)
alt Hacker News
I am a fan of "const", because it is useful in expressing API constraints and behavior. Contrast against putting "register" on a function parameter being useless because either it's passed by value, then it's a copy anyway and register is meaningless to the caller, or it's a pointer, in which case it again does nothing because you already have a pointer (and something somewhere is very confused.)