if (ch == '+' || ch == '-' || /* ++, --, +=, -= and -> as well! */
ch == '>' || ch == '<' || /* <<, >>, <=, >= */
ch == '=' || /* == */
if (ch == '+' || ch == '-' || /* ++, --, +=, -= and -> as well! */
ch == '>' || ch == '<' || /* <<, >>, <=, >= */
ch == '=' || /* == */