Compilare: user.cpp: In function ‘int main()’: user.cpp:15:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++nr[s1[i]]; ^ user.cpp:16:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[s1[i]][nr[i]] = s2[i]; ^ user.cpp:21:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j = 1; j <= nr[s1[i]]; ++j) ^ user.cpp:22:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(c[s1[i]][j] != c[s1[i]][0]) ^ user.cpp:22:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(c[s1[i]][j] != c[s1[i]][0]) ^ user.cpp:24:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(j <= nr[s1[i]]) ^ user.cpp:35:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(c[s1[i]][0] != s1[i] && c[s1[i]][0] != ' ') ^ user.cpp:35:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(c[s1[i]][0] != s1[i] && c[s1[i]][0] != ' ') ^ user.cpp:39:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[nk][2] = c[s1[i]][0]; ^ user.cpp:40:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[s1[i]][0] = ' '; ^