Compilare: user.c: In function ‘main’: user.c:87:17: warning: implicit declaration of function ‘strndup’ [-Wimplicit-function-declaration] e[pair_index++].key = strndup(line + prev, position - prev); ^ user.c:87:37: warning: assignment makes pointer from integer without a cast [enabled by default] e[pair_index++].key = strndup(line + prev, position - prev); ^ user.c:94:41: warning: assignment makes pointer from integer without a cast [enabled by default] e[pair_index - 1].value = strndup( line + prev, position - prev ); ^ user.c:101:41: warning: assignment makes pointer from integer without a cast [enabled by default] e[pair_index - 1].value = strndup(line + prev, position - prev); ^ user.c:20:55: warning: variable ‘mark_for_paranthesis’ set but not used [-Wunused-but-set-variable] int mark_for_first_entry = 0, mark_for_colon = 0, mark_for_paranthesis = 0; ^