Compilare: user.cpp: In function ‘int main()’: user.cpp:45:38: warning: format ‘%hd’ expects argument of type ‘short int*’, but argument 2 has type ‘bool*’ [-Wformat=] scanf("%hd", &input[i][j]); ^ user.cpp:39:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dreptunghiuri2.in", "r", stdin); ^ user.cpp:40:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dreptunghiuri2.out", "w", stdout); ^ user.cpp:42:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hd %hd", &n, &m); ^ user.cpp:45:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hd", &input[i][j]); ^ user.cpp: In function ‘bool cmp(corner, corner)’: user.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type] } ^