Compilare: user.cpp: In function ‘int main(int, const char**)’: user.cpp:15:16: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] in >> str1 + 1 >> str2 + 1; int n, m, k = 0; ^ user.cpp:15:28: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] in >> str1 + 1 >> str2 + 1; int n, m, k = 0; ^ user.cpp:17:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( int i = 1; i <= n; i ++ ) { cnt1[str1[i]] ++; } ^ user.cpp:18:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( int j = 1; j <= m; j ++ ) { cnt2[str2[j]] ++; } ^ user.cpp:23:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( cnt2[str1[i]] > 0 ) { ^ user.cpp:24:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( k > 0 && ans[k] > str1[i] && cnt1[ans[k]] - cnt2[ans[k]] > 0 ) { ^ user.cpp:24:75: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( k > 0 && ans[k] > str1[i] && cnt1[ans[k]] - cnt2[ans[k]] > 0 ) { ^ user.cpp:25:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] cnt2[ans[k --]] ++; } ^ user.cpp:26:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] cnt2[str1[i]] --; ans[++ k] = str1[i]; } ^ user.cpp:27:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] cnt1[str1[i]] --; } ^