int f(int x, int y);

() bad() {
    /* ERRORS */
    =;
    +;
    mod;
    else;
    then;
    1=;
    =1;
    
    int a;
    /* ERRORS */
    a=;
    =a;
    = =;
    = = =;
    = a =;
    = a = =;
    = = a;
    +++;
    not;
    not =;
    =not;
    a=not;
    mod not;
    a=/* */;
    a=while;
    
    /* ERRORS */
    f(=);
    f(=,=);
    f(/* */,a);
    f(else,else);
    f(while,while);
    f(while);
}