Compilare: user.cpp: In function ‘void read()’: user.cpp:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:22: 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:35: warning: array subscript has type ‘char’ user.cpp:36: warning: array subscript has type ‘char’ user.cpp:37: warning: array subscript has type ‘char’ user.cpp: In function ‘void lee1(int, int)’: user.cpp:78: warning: comparison between signed and unsigned integer expressions user.cpp:81: warning: array subscript has type ‘char’ user.cpp:81: warning: array subscript has type ‘char’ user.cpp:83: warning: array subscript has type ‘char’ user.cpp:84: warning: array subscript has type ‘char’ user.cpp: In function ‘void tr2(char, cp&, int, int)’: user.cpp:97: warning: array subscript has type ‘char’ user.cpp:98: warning: array subscript has type ‘char’ user.cpp:99: warning: array subscript has type ‘char’ user.cpp: In function ‘void lee2(int, int)’: user.cpp:140: warning: comparison between signed and unsigned integer expressions user.cpp:143: warning: array subscript has type ‘char’ user.cpp:143: warning: array subscript has type ‘char’ user.cpp:145: warning: array subscript has type ‘char’ user.cpp:146: warning: array subscript has type ‘char’ user.cpp: In function ‘int ok2(cp&)’: user.cpp:119: warning: control reaches end of non-void function user.cpp: In function ‘int dir2(int)’: user.cpp:110: warning: control reaches end of non-void function user.cpp: In function ‘int ok1(cp&)’: user.cpp:57: warning: control reaches end of non-void function user.cpp: In function ‘int dir1(int)’: user.cpp:48: warning: control reaches end of non-void function