Compilare: main.cpp: In function 'int expresie()': main.cpp:22:13: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | while(s[i] == '-' || s[i] == '+') | ^ main.cpp:22:28: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | while(s[i] == '-' || s[i] == '+') | ^ main.cpp:24:14: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | if(s[i] == '+') | ^ main.cpp: In function 'int factor()': main.cpp:40:13: warning: array subscript has type 'char' [-Wchar-subscripts] 40 | while(s[i] == '*' || s[i] == '/') | ^ main.cpp:40:28: warning: array subscript has type 'char' [-Wchar-subscripts] 40 | while(s[i] == '*' || s[i] == '/') | ^ main.cpp:42:14: warning: array subscript has type 'char' [-Wchar-subscripts] 42 | if(s[i] == '*') | ^ main.cpp: In function 'int termen()': main.cpp:58:10: warning: array subscript has type 'char' [-Wchar-subscripts] 58 | if(s[i] == '(') | ^ main.cpp: In function 'int constanta()': main.cpp:73:21: warning: array subscript has type 'char' [-Wchar-subscripts] 73 | while(isdigit(s[i]) == 1) | ^ main.cpp:75:24: warning: array subscript has type 'char' [-Wchar-subscripts] 75 | r = r * 10 + s[i] - '0'; | ^