Compilare: user.cpp: In member function ‘int pt::c()’: user.cpp:46: warning: array subscript has type ‘char’ user.cpp:46: warning: array subscript has type ‘char’ user.cpp:46: warning: array subscript has type ‘char’ user.cpp: In function ‘bool ts(pt)’: user.cpp:83: warning: array subscript has type ‘char’ user.cpp:83: warning: array subscript has type ‘char’ user.cpp:83: warning: array subscript has type ‘char’ user.cpp: In function ‘void push(pt, int)’: user.cpp:88: warning: array subscript has type ‘char’ user.cpp:88: warning: array subscript has type ‘char’ user.cpp:88: warning: array subscript has type ‘char’ user.cpp: In function ‘int main()’: user.cpp:93: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:94: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:96: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:101: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result