HDOJ_ How can I read input data until the end of file ?

Language	C	C++	Pascal
To read numbers	int n; while(scanf("%d", &n) != EOF) { 　　... }	int n; while (cin >> n) { 　　... }	var n: integer; ... while not seekeof do begin 　　read(n); 　　... end;
To read characters	int c; while ((c = getchar()) != EOF) { 　　... }	char c; while (cin.get(c)) { 　　... }	var c: char; ... while not eof do begin 　　read(c);  　　... end;
To read lines	char line[1024]; while(gets(line)) { 　　... }	string line; while (getline(cin, line)) { 　　... }	var line: string; ... while not eof do begin 　　readln(line); 　　... end;