Compilare: user.cpp: In function 'bool factor(int&)': user.cpp:43: warning: deprecated conversion from string constant to 'char*' user.cpp:45: warning: deprecated conversion from string constant to 'char*' user.cpp:47: warning: deprecated conversion from string constant to 'char*' user.cpp:49: warning: array subscript has type 'char' user.cpp: In function 'bool eval1(int&)': user.cpp:60: warning: deprecated conversion from string constant to 'char*' user.cpp: In function 'bool eval(int&)': user.cpp:70: warning: deprecated conversion from string constant to 'char*' user.cpp: In function 'int main()': user.cpp:87: warning: array subscript has type 'char' user.cpp:87: warning: array subscript has type 'char'