Compilare: user.cpp: In function ‘int E()’: user.cpp:13:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[last] == '+' || s[last] == '-' ) ^ user.cpp:13:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[last] == '+' || s[last] == '-' ) ^ user.cpp:15:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[last] == '+' ) ^ user.cpp: In function ‘int T()’: user.cpp:32:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[last] == '*' || s[last] == '/' ) ^ user.cpp:32:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[last] == '*' || s[last] == '/' ) ^ user.cpp:34:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( s[last] == '*' ) ^ user.cpp: In function ‘int F()’: user.cpp:51:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( s[last] == '(') ///subexpresie ^ user.cpp:59:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[last] >= '0' && s[last] <= '9') ^ user.cpp:59:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[last] >= '0' && s[last] <= '9') ^ user.cpp:61:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] r = r * 10 + s[last]- '0'; ^ user.cpp: In function ‘int main()’: user.cpp:75:24: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (s, MAX, fin); ^