Compilare: user.cpp: In function ‘int main()’: user.cpp:74:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ( x > 0 && sum > v[x - 1] && sum > 0 ) ^ user.cpp:40:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kami.in", "r", stdin); ^ user.cpp:41:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kami.out", "w", stdout); ^ user.cpp: In function ‘char getChar()’: user.cpp:15:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, Bsize, stdin); ^