Compilare: user.c: In function ‘adauga’: user.c:11:9: warning: implicit declaration of function ‘malloc’ [-Wimplicit-function-declaration] p=(Nod*)malloc(sizeof(Nod)); ^ user.c:11:17: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] p=(Nod*)malloc(sizeof(Nod)); ^ user.c: In function ‘sterge’: user.c:34:9: warning: implicit declaration of function ‘free’ [-Wimplicit-function-declaration] free(p); ^ user.c:34:9: warning: incompatible implicit declaration of built-in function ‘free’ [enabled by default]