| #include <string.h> | |
| #include <stddef.h> | |
| #include <stdlib.h> | |
| char *strdup(const char *s) | |
| { | |
| size_t sz = strlen(s) + 1; | |
| char *d = malloc(sz); | |
| memcpy(d, s, sz); | |
| return d; | |
| } | |
| char *strconcat(const char *s1, const char *s2) | |
| { | |
| size_t sz_1 = strlen(s1); | |
| size_t sz_2 = strlen(s2); | |
| char *d = malloc(sz_1 + sz_2 + 1); | |
| memcpy(d, s1, sz_1); | |
| memcpy(d + sz_1, s2, sz_2 + 1); | |
| return d; | |
| } |