Compilare: main.cpp: In function 'int expresie()': main.cpp:23:13: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | while(s[pos] == '+' || s[pos] == '-'){ | ^~~ main.cpp:23:30: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | while(s[pos] == '+' || s[pos] == '-'){ | ^~~ main.cpp:24:14: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | if(s[pos] == '+'){ | ^~~ main.cpp: In function 'int termen()': main.cpp:37:13: warning: array subscript has type 'char' [-Wchar-subscripts] 37 | while(s[pos] == '*' || s[pos] == '/'){ | ^~~ main.cpp:37:30: warning: array subscript has type 'char' [-Wchar-subscripts] 37 | while(s[pos] == '*' || s[pos] == '/'){ | ^~~ main.cpp:38:14: warning: array subscript has type 'char' [-Wchar-subscripts] 38 | if(s[pos] == '*'){ | ^~~ main.cpp: In function 'int factor()': main.cpp:51:10: warning: array subscript has type 'char' [-Wchar-subscripts] 51 | if(s[pos] == '('){ | ^~~ main.cpp:56:17: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | while(s[pos] >= '0' && s[pos] <= '9'){ | ^~~ main.cpp:56:34: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | while(s[pos] >= '0' && s[pos] <= '9'){ | ^~~ main.cpp:58:20: warning: array subscript has type 'char' [-Wchar-subscripts] 58 | r += s[pos]-'0'; | ^~~