Oracle Message O2I-00121 - No value was specified for the CODE option

ERRORNo value was specified for the CODE option
CAUSEThe required CODE option was not specified on the command line or in a configuration file.
ACTIONSpecify the CODE option on the command line or in a configuration file. Currently, the following values of the CODE option are supported: CODE=ANSI_C, CODE=KR_C, CODE=C