() test() {
    /* ERRORS */
    int a = then;
    int b = else;
    int c = 1==2 then;
    int d = 1==2 then 3;
    int e = 1==2 then 3 else;
    int f = then 3;
    int g = then 3 else;
    int h = then 3 else 4;
    int i = 3 else;
    int j = 3 else 4;
    int k = 3 else 4 then;
    int l = 3 else 4 then 1==0;
}