Compilare: user.cpp: In function 'int main()': user.cpp:59: warning: array subscript has type 'char' user.cpp:59: warning: array subscript has type 'char' user.cpp:61: warning: array subscript has type 'char' user.cpp:61: warning: array subscript has type 'char' user.cpp:75: warning: array subscript has type 'char' user.cpp:75: warning: array subscript has type 'char' user.cpp:75: warning: array subscript has type 'char' user.cpp:75: warning: array subscript has type 'char' user.cpp:77: warning: array subscript has type 'char' user.cpp:77: warning: array subscript has type 'char' user.cpp:14: warning: 'st_col' may be used uninitialized in this function user.cpp:14: warning: 'st_lin' may be used uninitialized in this function