一个字符串比较问题?
char str1[] = "abc";
char str2[] = "abc";
const char str3[] = "abc";
const char str4[] = "abc";
const char* str5 = "abc";
const char* str6 = "abc";
cout << std::boolalpha << ( str1==str2 ) << '\n'; // 输出什么?为什么?
cout << std::boolalpha << ( str3==str4 ) << '\n'; // 输出什么?为什么?
cout << std::boolalpha << ( str5==str6 ) << '\n'; // 输出什么?为什么?