string - C - Passing multiple pointers as parameters to pthread_create -

i new c , these concepts of pointers extremely confusing me. trying seems simple, getting lot of compilation errors.

i want spawn new thread , pass multiple pointers parameters (seems way can use global variables in c through pointers), created struct hold these pointers, wont seem compile no matter change.

here code (i took out of code, except problem seems be)

//want store pointers in pointers, when change pointer changes "global" variable  void request_handler(params *parameters) {     params parameter = *parameters;     int *numberofotherservers = parameter.numberofservers;     int *clientsock = parameter.clientsock;     char ***serverlist = parameters.serverlist;     struct function **functionlist[10] = parameters.functionlist[10]; }  typedef struct {     int *clientsock;     int *numberofservers;     char **serverlist;     struct function *functionlist[10]; } params;  struct function {     char name[20];     int parameternumer;     int cando;     char *otherservers[10];  };  int main(int argc, const char * argv[]) {     int client_sock_desc;      pthread_t handler_thread;      struct function functionlist[10] = {{"",0, 0, {}}};     int =0, numberofotherservers;     char *serverlist[10];      //create struct pass parameters     struct params parameters;     parameters.clientsock = &client_sock_desc;     parameters.functionlist[10] = functionlist;     parameters.numberofservers = &numberofotherservers;     parameters.serverlist = serverlist;      //create thread new clients request handled     if(pthread_create(&handler_thread, null, request_handler, parameters) != 0) {         perror("pthread_create failed");     } } 

c far messiest language if ever used. task should simple, yet i'm lost because of guessing of how many * or & should put on variable call it.

you should pass address of parameters request_handler function through pthread_create. local variable, not appropriate pass address.

so define pointer , allocate memory it.

struct params *parameters = malloc(sizeof(*parameters)); 

set members appropriately using ->, , pass is.

update: few more errors

• move definition of params @ top, before request_handler function.
• in main define parameters params *parameters not struct params *parameters
• use parameters-> access members instead of parameters. wherever pointer.