Compilare: user.cpp: In function ‘void baga(int*)’: user.cpp:29:26: warning: ‘sizeof’ on array function parameter ‘a’ will return size of ‘int*’ [-Wsizeof-array-argument] memset(a, 0, sizeof(a)); ^ user.cpp:27:17: note: declared here void baga(int a[]) ^ user.cpp:29:24: 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)); ^ user.cpp:34:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < s.size(); i ++) ~~^~~~~~~~~~