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Help with void*

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http://www.daniweb.com – Hi, I'm trying to convert a void pointer to a struct pointer.. that's seems very easy but my compiler give me error. Thanks. /home/subi/Personal/Projects/LinkedListUserInfo/main.cpp||In function ‘error_t parse_opt(int, char*, argp_state*)’:| /home/subi/Personal/Projects/LinkedListUserInfo/main.cpp|50|error: expected primary-expression before ‘)’ token| /home/subi/Personal/Projects/LinkedListUserInfo/main.cpp|50|error: expected ‘;’ before ‘null_pointer’| /home/subi/Personal/Projects/LinkedListUserInfo/main.cpp|48|warning: unused variable ‘null_pointer’| ||=== Build finished: 2 errors, 1 warnings ===| static error_t parse_opt(int key, char *arg, struct argp_state* state) {         void* null_pointer = state->input;         struct arguments *arguments;         arguments = (arguments*) null_pointer;         switch (key)         {                 case 'v':                         arguments->verbose = 1;                         break;                 case 'i':                         arguments->infile = arg;                         break;                 case 'o':                         arguments->outfile = arg;                         break;                 case ARGP_KEY_ARG:                         if (state->arg_num >= 1)                         {                                 argp_usage(state);                         }                         arguments->args[state->arg_num] = arg;                         break;                 case ARGP_KEY_END:                         if (state->arg_num < 1)                         {                                 argp_usage(state);                         }                         break;                 default:                         return ARGP_ERR_UNKNOWN;         }         return 0; } (General)

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Submitted by dalinux on 03/06/2010 – Made popular on 03/06/2010

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