Compilare: user.cpp: In function 'long int factor()': user.cpp:18: warning: array subscript has type 'char' user.cpp:25: warning: array subscript has type 'char' user.cpp:25: warning: array subscript has type 'char' user.cpp:27: warning: array subscript has type 'char' user.cpp: In function 'long int termen()': user.cpp:36: warning: array subscript has type 'char' user.cpp:36: warning: array subscript has type 'char' user.cpp:38: warning: array subscript has type 'char' user.cpp: In function 'long int eval()': user.cpp:58: warning: array subscript has type 'char' user.cpp:58: warning: array subscript has type 'char' user.cpp:60: warning: array subscript has type 'char' user.cpp: In function 'int main()': user.cpp:81: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[100001]'