C Passing a pointer -

static void increment(long long *n){   (*n)++; }  static void mult2(long long *n){   (*n) = (*n)*2; }  struct counter{   long long counter; };  struct counter* cp = malloc(sizeof(struct counter)); cp[0].counter = 5; increment(cp);  printf("expecting 6 : %lld.\n", cp[0].counter); 

hi, part of code want increment or x2 counter, kept getting error on argument , argument type.

struct count , long long different types.

try

increment(&(cp->counter));

usage of cp[0].counter = 5 instead of cp->counter = 5 quite bizzare, imo.