Compilare: user.cpp: In function ‘void divide(char*, int)’: user.cpp:20:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[0] && !s[s[0]]) ^ user.cpp: In function ‘int main()’: user.cpp:59:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(b[b[0]] != 0) ^ user.cpp:61:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(a[a[0]] != 0) ^ user.cpp:72:24: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(ans = comp(s, p)) { ^