Compilare: user.c: In function ‘main’: user.c:17:2: warning: implicit declaration of function ‘malloc’ [-Wimplicit-function-declaration] numbers = malloc(n * sizeof(int)); ^ user.c:17:12: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] numbers = malloc(n * sizeof(int)); ^ user.c:31:2: warning: implicit declaration of function ‘free’ [-Wimplicit-function-declaration] free(numbers); ^ user.c:31:2: warning: incompatible implicit declaration of built-in function ‘free’ [enabled by default]