1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 5 typedef enum { 6 OK, 7 ERROR_MEMORY_ALLOC, 8 ERROR_NULL_POINTER 9 } status_t; 10 11 status_t strclone(const char *, char **); 12 13 int main (void) { 14 char str[] = "Hello, world!"; 15 char *cpy; 16 status_t st; 17 18 if((st = strclone(str, &cpy))) return st; 19 20 printf("%s\n", cpy); 21 22 free(cpy); 23 return 0; 24 } 25 26 status_t strclone(const char *s, char **d) 27 { 28 if(!s || !d) return ERROR_NULL_POINTER; 29 30 /* +1 for the null character */ 31 if(!(*d = (char *)calloc(sizeof(char), (strlen(s) + 1)))) return ERROR_MEMORY_ALLOC; 32 33 for(size_t i = 0; *s; s++, i++) (*d)[i] = *s; 34 35 return OK; 36 }
