Compilare: user.cpp: In function ‘int finalizare(char*, int&)’: user.cpp:68:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] return val[expr[item++]]; ^ user.cpp: In function ‘void citire()’: user.cpp:90:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(expr1[i] >= 'a' && expr1[i] <= 'z' && val[expr1[i]] == 0){ ^ user.cpp:92:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[expr1[i]] = 1; ^ user.cpp:97:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(expr2[i] >= 'a' && expr2[i] <= 'z' && val[expr2[i]] == 0){ ^ user.cpp:99:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[expr2[i]] = 1; ^ user.cpp:129:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[litere[k]] = (i & (1<<k)) >> k; ^