Compilare: user.cpp: In function ‘int exp()’: user.cpp:13:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[i] != '(') ^ user.cpp:16:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (v[i] >= '0' && v[i] <= '9') ^ user.cpp:16:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (v[i] >= '0' && v[i] <= '9') ^ user.cpp:18:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] nr = nr * 10 + v[i] - '0'; ^ user.cpp:23:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if (v[i] == '(') ^ user.cpp: In function ‘int inmultire()’: user.cpp:32:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[i] == '*') ^ user.cpp:38:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if (v[i] == '/') ^ user.cpp: In function ‘int scadere()’: user.cpp:51:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[i] == '-') ^ user.cpp: In function ‘int adunare()’: user.cpp:63:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[i] != '\0') ^ user.cpp:67:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[i] == ')') ^ user.cpp:70:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[i] == '+') ^ user.cpp: In function ‘int exp()’: user.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int adunare()’: user.cpp:78:1: warning: control reaches end of non-void function [-Wreturn-type] } ^