Compilare: user.cpp: In function ‘int main()’: user.cpp:41:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(ord[s[i]]<=ord[semn[crt]] && semn[crt]!='(') ^ user.cpp:41:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(ord[s[i]]<=ord[semn[crt]] && semn[crt]!='(') ^ user.cpp: In function ‘int slv(int, int, char)’: user.cpp:26:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:30:37: 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:31:39: 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:32:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ /tmp/ccJwW5wQ.o: In function `main': user.cpp:(.text.startup+0x56): warning: the `gets' function is dangerous and should not be used.