Compilare: user.cpp: In function ‘int main()’: user.cpp:47:19: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100005]’ [-Wformat=] scanf("%s", &a); ^ user.cpp:65:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(!op.empty() && priority[a[i]]<=priority[op.top()]) ^ user.cpp:91:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<polo.size(); i++) ^ user.cpp: In function ‘int calc(int, int, int)’: user.cpp:38:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:42:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare.in", "r", stdin); ^ user.cpp:43:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare.out", "w", stdout); ^ user.cpp:47:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &a); ^ user.cpp: In function ‘int conv(char)’: user.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type] } ^