Compilare: main.cpp: In function 'int expresie()': main.cpp:26:23: warning: array subscript has type 'char' [-Wchar-subscripts] 26 | while (i<lg && (s[i]=='+' || s[i]=='-')) | ^ main.cpp:26:36: warning: array subscript has type 'char' [-Wchar-subscripts] 26 | while (i<lg && (s[i]=='+' || s[i]=='-')) | ^ main.cpp:27:15: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | if (s[i]=='+') {i++; sum+=termen();} | ^ main.cpp: In function 'int termen()': main.cpp:35:23: warning: array subscript has type 'char' [-Wchar-subscripts] 35 | while (i<lg && (s[i]=='*' || s[i]=='/')) | ^ main.cpp:35:36: warning: array subscript has type 'char' [-Wchar-subscripts] 35 | while (i<lg && (s[i]=='*' || s[i]=='/')) | ^ main.cpp:36:15: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | if (s[i]=='*') {i++; prod*=factor();} | ^ main.cpp: In function 'int factor()': main.cpp:44:11: warning: array subscript has type 'char' [-Wchar-subscripts] 44 | if (s[i]=='-') i++,semn=-1; | ^ main.cpp:45:11: warning: array subscript has type 'char' [-Wchar-subscripts] 45 | if (s[i]=='(') | ^ main.cpp:50:22: warning: array subscript has type 'char' [-Wchar-subscripts] 50 | while (i<lg && s[i]>='0' && s[i]<='9') | ^ main.cpp:50:35: warning: array subscript has type 'char' [-Wchar-subscripts] 50 | while (i<lg && s[i]>='0' && s[i]<='9') | ^ main.cpp:51:23: warning: array subscript has type 'char' [-Wchar-subscripts] 51 | val=val*10+s[i++]-'0'; | ~^~