NDC Does C++ Countdown!

It was my pleasure to run a small workshop style session at the excellent NDC-London conference. I ran a fun C++ game which parodies the popular UK TV gameshow Countdown.

• In the TV version contestants take turns picking 9 random vowels/consonants and finding the longest word in 30 seconds.
• In my version contestants take turns picking 7 random tokens from 5 categories: (keywords, identifiers, operators, punctuators, literals) and writing the shortest C++ program using all 7 tokens in 8 minutes.

Contestants write their code in customized cyber-dojo sessions which automatically:

• checks which tokens have been used
• tells you the size of the program
• allows everyone to see all the submissions in the review

The rules:

• tokens must be the correct type; eg you cannot write "." or ... for a dot operator
• whitespace does not count towards the program's size
• additional tokens are allowed
• the program must compile
• the program is not executed
• warnings are allowed

In one round Phil Nash selected these 7 tokens:

const vector tokens =
{
    ".",                  // operator
    "switch",             // keyword
    "snafu",              // identifier
    ",",                  // punctuator
    "\"salmo\"",          // literal
    "goto",               // keyword
    "!",                  // operator
};

and the winning solution (54 characters long) was:

union X { X* x; };
X snafu() {
  l: switch (X().x,!"salmo"); goto l;
}

In another round Hulgar Frydrych selected these 7 tokens:

const vector tokens =
{
    "catch",              // keyword
    "->",                 // operator
    "[",                  // punctuator
    ";",                  // punctuator
    "--",                 // operator
    "foobar",             // identifier
    "operator",           // keyword
};

and the winning solution (53 characters long) was:

class c {
  c operator->(){ 
    foobar:
    try{
    }
    catch(c x[]){
        x--;
    }
  }
};

Can you create shorter versions?