Compilare: main.cpp: In function 'void Add(int_fast16_t*, int_fast16_t*, int_fast16_t*)': main.cpp:13:26: warning: 'sizeof' on array function parameter 'a' will return size of 'int_fast16_t* {aka long int*}' [-Wsizeof-array-argument] memset(a, 0, sizeof(a)); ^ main.cpp:11:32: note: declared here inline void Add(int_fast16_t a[], int_fast16_t b[], int_fast16_t c[]) ^ main.cpp:13:24: warning: argument to 'sizeof' in 'void* memset(void*, int, size_t)' call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memset(a, 0, sizeof(a)); ^