Compilare: main.c: In function 'main': main.c:22:17: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 22 | int n = strlen(s); | ^~~~~~ main.c:22:17: warning: incompatible implicit declaration of built-in function 'strlen' main.c:3:1: note: include '<string.h>' or provide a declaration of 'strlen' 2 | #include <stdlib.h> +++ |+#include <string.h> 3 | int main()