Compilare: user.cpp: In function 'long int program(int&, int)': user.cpp:57: warning: array subscript has type 'char' user.cpp:60: warning: array subscript has type 'char' user.cpp:75: warning: array subscript has type 'char' user.cpp: In function 'int main()': user.cpp:107: warning: comparison between signed and unsigned integer expressions user.cpp:109: warning: array subscript has type 'char' user.cpp:111: warning: array subscript has type 'char' user.cpp:116: warning: comparison between signed and unsigned integer expressions user.cpp:119: warning: array subscript has type 'char' user.cpp:123: warning: array subscript has type 'char'