How to call the function of C file in .m file for IOS Objective-C? -


in new objective-c project , create file viewcontroller.m.

and add other source c file , header file in objective-c project.

if function in c file following:

int dump(addr) {    //function code }

i add button in viewcontroller.m following code.

- (ibaction)showclient:(id)sender {     //how call function in c file here ?  }

how call dump function in viewcontroller.m after push button?.

-----------------------------------edit--------------------------------

the function want call in .m file /* * dump entire arp table */ int dump(addr) u_long addr; { int mib[6]; size_t needed; char *host, *lim, *buf, *next; struct rt_msghdr *rtm; struct sockaddr_inarp *sin; struct sockaddr_dl *sdl; extern int h_errno; struct hostent *hp; int found_entry = 0;

    mib[0] = ctl_net;     mib[1] = pf_route;     mib[2] = 0;     mib[3] = af_inet;     mib[4] = net_rt_flags;     mib[5] = rtf_llinfo;     if (sysctl(mib, 6, null, &needed, null, 0) < 0)         err(1, "route-sysctl-estimate");     if ((buf = malloc(needed)) == null)         err(1, "malloc");     if (sysctl(mib, 6, buf, &needed, null, 0) < 0)         err(1, "actual retrieval of routing table");     lim = buf + needed;     (next = buf; next < lim; next += rtm->rtm_msglen) {         rtm = (struct rt_msghdr *)next;         sin = (struct sockaddr_inarp *)(rtm + 1);         sdl = (struct sockaddr_dl *)(sin + 1);         if (addr) {             if (addr != sin->sin_addr.s_addr)                 continue;             found_entry = 1;         }         if (nflag == 0)             hp = gethostbyaddr((caddr_t)&(sin->sin_addr),                 sizeof sin->sin_addr, af_inet);         else             hp = 0;         if (hp)             host = hp->h_name;         else {             host = "?";             if (h_errno == try_again)                 nflag = 1;         }         printf("%s (%s) @ ", host, inet_ntoa(sin->sin_addr));         if (sdl->sdl_alen)             ether_print((u_char *)lladdr(sdl));         else             printf("(incomplete)");         if (rtm->rtm_rmx.rmx_expire == 0)             printf(" permanent");         if (sin->sin_other & sin_proxy)             printf(" published (proxy only)");         if (rtm->rtm_addrs & rta_netmask) {             sin = (struct sockaddr_inarp *)                 (sdl->sdl_len + (char *)sdl);             if (sin->sin_addr.s_addr == 0xffffffff)                 printf(" published");             if (sin->sin_len != 8)                 printf("(weird)");         }         printf("\n");     }     return (found_entry); }

  1. #import "cfile.h" in viewcontroller.m
  2. call ordinary c -- function(parameters);

(3. friendly advice: buy book on c)


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