Compilare: user.cpp: In function ‘void aduna(char*, char*, char*)’: user.cpp:42:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[++c[0]] = t; ^ user.cpp: In function ‘void scadere(char*, char*, char*)’: user.cpp:71:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (c[c[0]] == 0) c[0]--; ^ user.cpp: In function ‘int findString()’: user.cpp:79:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[++a[0]] = n % 10; ^ user.cpp:91:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] b[++b[0]] = n % 10; ^ user.cpp:96:9: warning: unused variable ‘op’ [-Wunused-variable] int op; ^ user.cpp: In function ‘void calc(int)’: user.cpp:132:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[++a[0]] = n % 10; ^ user.cpp:142:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] b[++b[0]] = n % 10; ^