void g0(), g1(), g2(), g3(), g4(), g5(), g6(); int f(int n) { switch(n) { default: g0(); break; case -1: g1(); break; case -2: g2(); break; case -3: g3(); break; case -4: g4(); break; case -5: g5(); break; case -6: g6(); break; } return 0; }