Compilare: user.cpp: In function ‘void read()’: user.cpp:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void tr1(char, cp&, int, int)’: user.cpp:36: warning: array subscript has type ‘char’ user.cpp:37: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp: In function ‘void lee1(int, int)’: user.cpp:79: warning: comparison between signed and unsigned integer expressions user.cpp:82: warning: array subscript has type ‘char’ user.cpp:82: warning: array subscript has type ‘char’ user.cpp:84: warning: array subscript has type ‘char’ user.cpp:85: warning: array subscript has type ‘char’ user.cpp: In function ‘void tr2(char, cp&, int, int)’: user.cpp:98: warning: array subscript has type ‘char’ user.cpp:99: warning: array subscript has type ‘char’ user.cpp:100: warning: array subscript has type ‘char’ user.cpp: In function ‘void lee2(int, int)’: user.cpp:141: warning: comparison between signed and unsigned integer expressions user.cpp:144: warning: array subscript has type ‘char’ user.cpp:144: warning: array subscript has type ‘char’ user.cpp:146: warning: array subscript has type ‘char’ user.cpp:147: warning: array subscript has type ‘char’ user.cpp: In function ‘int ok2(cp&)’: user.cpp:120: warning: control reaches end of non-void function user.cpp: In function ‘int dir2(int)’: user.cpp:111: warning: control reaches end of non-void function user.cpp: In function ‘int ok1(cp&)’: user.cpp:58: warning: control reaches end of non-void function user.cpp: In function ‘int dir1(int)’: user.cpp:49: warning: control reaches end of non-void function