Compilare: user.cpp: In function ‘int main()’: user.cpp:20:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bmat.in", "r", stdin); ^ user.cpp:21:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bmat.out", "w", stdout); ^ user.cpp:28:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &N, &M, &K); ^ user.cpp:33:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %c", &matEl); ^ user.cpp:46:2: warning: ‘countType[1]’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (countType[1] == 0 && winNIM == false) ^ user.cpp:49:41: warning: ‘countType[0]’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d\n", LgExpo(2, countType[0] + countType[1] - (countType[1] != 0))); ^