Compilare: user.cpp: In function 'long int program(int&, int)': user.cpp:58: warning: array subscript has type 'char' user.cpp:61: warning: array subscript has type 'char' user.cpp:76: warning: array subscript has type 'char' user.cpp: In function 'int main()': user.cpp:108: warning: comparison between signed and unsigned integer expressions user.cpp:110: warning: array subscript has type 'char' user.cpp:112: warning: array subscript has type 'char' user.cpp:117: warning: comparison between signed and unsigned integer expressions user.cpp:120: warning: array subscript has type 'char' user.cpp:121: warning: array subscript has type 'char' user.cpp:125: warning: array subscript has type 'char'