형님들 이거 뭐가다른건가요 C#공부중..

[익명(116.40)]

String firstName;

firstName = "Bob";

Console.WriteLine(firstName);

String firstName;

firstName = "Liem";

Console.WriteLine(firstName);

String firstName;

firstName = "Isabella";

Console.WriteLine(firstName);

String firstName;

firstName = "Yasmin";

Console.WriteLine(firstName);

string firstName;

firstName = "Bob";

Console.WriteLine(firstName);

firstName = "Liem";

Console.WriteLine(firstName);

firstName = "Isabella";

Console.WriteLine(firstName);

firstName = "Yasmin";

Console.WriteLine(firstName);

String firstName;

firstName = "Bob";

Console.WriteLine(firstName);

String firstName;

firstName = "Liem";

Console.WriteLine(firstName);

String firstName;

firstName = "Isabella";

Console.WriteLine(firstName);

String firstName;

firstName = "Yasmin";

Console.WriteLine(firstName);

string firstName;

firstName = "Bob";

Console.WriteLine(firstName);

firstName = "Liem";

Console.WriteLine(firstName);

firstName = "Isabella";

Console.WriteLine(firstName);

firstName = "Yasmin";

Console.WriteLine(firstName);

위에랑 아래랑 다른게 없는데 왜 제껀 오류뜨는거죠

[프갤러 1(125.136)]

S랑 s가 다른디