Compilare: user.cpp: In function ‘char vp(char, char, char)’: user.cpp:87:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(patrat[lin][col] - patrat[lin - d][col] - patrat[lin][col - d] + patrat[lin - d][col - d] == d * d){ ^ user.cpp:87:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(patrat[lin][col] - patrat[lin - d][col] - patrat[lin][col - d] + patrat[lin - d][col - d] == d * d){ ^ user.cpp:87:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(patrat[lin][col] - patrat[lin - d][col] - patrat[lin][col - d] + patrat[lin - d][col - d] == d * d){ ^ user.cpp:87:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(patrat[lin][col] - patrat[lin - d][col] - patrat[lin][col - d] + patrat[lin - d][col - d] == d * d){ ^ user.cpp: In function ‘char vr(char, char, char)’: user.cpp:106:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(romb[lin][col] - rj[lin + d - 1][col - d + 1] - rs[lin - d + 1][col - d + 1] + romb[lin][col - 2 * d + 1] == 2 * (d - 1) * (d - 1) + 2 * d - 1){ ^ user.cpp:106:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(romb[lin][col] - rj[lin + d - 1][col - d + 1] - rs[lin - d + 1][col - d + 1] + romb[lin][col - 2 * d + 1] == 2 * (d - 1) * (d - 1) + 2 * d - 1){ ^ user.cpp:106:95: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(romb[lin][col] - rj[lin + d - 1][col - d + 1] - rs[lin - d + 1][col - d + 1] + romb[lin][col - 2 * d + 1] == 2 * (d - 1) * (d - 1) + 2 * d - 1){ ^