Borderou de evaluare (job #602342)

Compilare: main.cpp: In function 'int main()': main.cpp:20:41: warning: array subscript has type 'char' [-Wchar-subscripts] 20 | if( --freq[ a[ st ] ] == 0 ) | ^ main.cpp:27:35: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | } else if( ++freq[ a[ i ] ] == 1 ) | ^ main.cpp:15:9: warning: unused variable 'i' [-Wunused-variable] 15 | int i = 0, st = 0, cate = 0; | ^