Compilare: main.cpp: In function 'int main()': main.cpp:30:18: warning: unused variable 'nr' [-Wunused-variable] 30 | unsigned int nr; | ^~ main.cpp:31:10: warning: unused variable 'a' [-Wunused-variable] 31 | pack a; | ^ main.cpp: In function 'int getOpType()': main.cpp:93:11: warning: array subscript has type 'char' [-Wchar-subscripts] 93 | s[i] = ch; | ^ main.cpp:96:27: warning: array subscript has type 'char' [-Wchar-subscripts] 96 | if (cmpStr(s, ops[i])) | ^ main.cpp:98:1: warning: control reaches end of non-void function [-Wreturn-type] 98 | } | ^