Compilare: main.c: In function 'main': main.c:31:15: warning: implicit declaration of function 'malloc' [-Wimplicit-function-declaration] 31 | int *mapb=malloc(MAX_N*sizeof(int)); | ^~~~~~ main.c:2:1: note: include '<stdlib.h>' or provide a declaration of 'malloc' 1 | #include <stdio.h> +++ |+#include <stdlib.h> 2 | main.c:31:15: warning: incompatible implicit declaration of built-in function 'malloc' [-Wbuiltin-declaration-mismatch] 31 | int *mapb=malloc(MAX_N*sizeof(int)); | ^~~~~~ main.c:31:15: note: include '<stdlib.h>' or provide a declaration of 'malloc' main.c:56:5: warning: implicit declaration of function 'free' [-Wimplicit-function-declaration] 56 | free(mapb); | ^~~~ main.c:56:5: note: include '<stdlib.h>' or provide a declaration of 'free' main.c:56:5: warning: incompatible implicit declaration of built-in function 'free' [-Wbuiltin-declaration-mismatch] main.c:56:5: note: include '<stdlib.h>' or provide a declaration of 'free'