Compilare: user.cpp: In function ‘int exp()’: user.cpp:12:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[p]=='+'||v[p]=='-') ^ user.cpp:12:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[p]=='+'||v[p]=='-') ^ user.cpp:13:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[p]=='+') ^ user.cpp: In function ‘int term()’: user.cpp:22:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[p]=='*'||v[p]=='/') ^ user.cpp:22:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[p]=='*'||v[p]=='/') ^ user.cpp:23:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[p]=='*') ^ user.cpp: In function ‘int fact()’: user.cpp:31:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[p]=='(') ^ user.cpp:36:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[p]<='9'&&v[p]>='0') ^ user.cpp:36:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[p]<='9'&&v[p]>='0') ^ user.cpp:37:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] x=x*10+v[p]-'0',p++; ^ user.cpp: In function ‘int main()’: user.cpp:43:37: 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:44:39: 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:45:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",v); ^