Handling pointers within multiple functions in C -

i'm trying create functions out of existing code in order make cleaner, , i'm having problems:

it used be:

int foo(char * s, char * t, char ** out) {   int val = strcmp(s, t);   if (val == 0) {      *out = strdup(s);      return 1;   } else {      *out = strdup(t);      return 5;   }   return 0; } 

now have:

int foo(char * s, char * t, char ** out) {   somefunction(s, t, out);   printf("%s", *out);   return 0; }  int somefunction(char *s, char * t, char **out) {    int val = strcmp(s, t);   if (val == 0) {      *out = strdup(s);      return 1;   } else {      *out = strdup(t);      return 5;   }   return 0; } 

and i'm getting segmentation faults when try printf. should somefunction expecting *out? guess i'm still confused.

this code "correct" if understand intent. assume doing along lines of

char *s = "foo"; char *t = "bar"; char *out; foo(s, t, out); 

when want

char *s = "foo"; char *t = "bar"; char *out; foo(s, t, &out);  // note & passes address of char* manipulated