Compilare: user.cpp: In function ‘int main()’: user.cpp:45:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( ptx[ str2[i] ] <= idx ) { ^ user.cpp:57:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] ans += i - ptx[ str2[i] ] + dly[ str2[i] ]; ^ user.cpp:57:58: warning: array subscript has type ‘char’ [-Wchar-subscripts] ans += i - ptx[ str2[i] ] + dly[ str2[i] ]; ^ user.cpp:58:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] str1[ ptx[ str2[i] ] ] = 4; ^ user.cpp:61:63: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( k != str2[i] && ptx[k] > ptx[ str2[i] ] ) ^ user.cpp:65:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( -- ptx[ str2[i] ]; ptx[ str2[i] ] > idx && str1[ ptx[ str2[i] ] ] != str2[i]; -- ptx[ str2[i] ] ) { ^ user.cpp:65:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( -- ptx[ str2[i] ]; ptx[ str2[i] ] > idx && str1[ ptx[ str2[i] ] ] != str2[i]; -- ptx[ str2[i] ] ) { ^ user.cpp:65:84: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( -- ptx[ str2[i] ]; ptx[ str2[i] ] > idx && str1[ ptx[ str2[i] ] ] != str2[i]; -- ptx[ str2[i] ] ) { ^ user.cpp:65:116: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( -- ptx[ str2[i] ]; ptx[ str2[i] ] > idx && str1[ ptx[ str2[i] ] ] != str2[i]; -- ptx[ str2[i] ] ) { ^ user.cpp:66:49: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( ptx[ str1[ ptx[ str2[i] ] ] ] < ptx[ str2[i] ] ) ^ user.cpp:66:53: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( ptx[ str1[ ptx[ str2[i] ] ] ] < ptx[ str2[i] ] ) ^ user.cpp:66:70: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( ptx[ str1[ ptx[ str2[i] ] ] ] < ptx[ str2[i] ] ) ^ user.cpp:67:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] -- dly[ str2[i] ]; ^ user.cpp:23:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "lru.in" , "r", stdin ); ^ user.cpp:24:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "lru.out", "w", stdout ); ^ user.cpp:27:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &t ); ^ user.cpp:31:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]