Compilare: user.cpp: In function ‘int elem(int, int&, char*)’: user.cpp:55:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (s[i]!='+'&&s[i]!='-'&&i<strlen(s)) ^ user.cpp:65:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] rez=rez*fn[x].v[s[i]]; ^ user.cpp: In function ‘int rez(int, int&)’: user.cpp:92:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] fn[x].v[fn[x].var[j]]=par[ap[i]]; ^ user.cpp:100:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (i<strlen(ap)) ^ user.cpp:107:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (q<strlen(fn[x].sir)) ^ user.cpp: In function ‘int main()’: user.cpp:121:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] par[s[0]]=numar(i,s); ^