Structs - Valid or Invalid Statements

Consider the following statements:

struct nameType

{

string first;

string last;

};

struct dateType

{

int month;

int day;

int year;

};

struct personalInfoType

{

nameType name;

int pID;

dateType dob;

};

Mark the following statements as valid or invalid. If a statement is
invalid, explain why:

person.name.first = “William�;

cout << person.name << endl;

classList [1] = person;

classList [20].pID = 000011100;

person = classList [20];

student = person.name;

cin >> student;

for (int j = 0; j < 100; j++)

classList [j].pID = 0000000;

classList.dob.day = 1;

student = name;