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最新推荐文章于 2017-11-24 21:00:21 发布

糖果天王

最新推荐文章于 2017-11-24 21:00:21 发布

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本文介绍了如何在不同语言中使用64位整数类型，并提供了读取输入数据直到文件结束的方法。涵盖了从类型定义、输入输出到文件操作的详细步骤。

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Q How to use 64-bit integer types ?

A Server supports signed and unsigned 64-bit integers.

Unsigned 64-bit integer. Value range: 0 .. 18446744073709551615.

Language	GCC/G++	Pascal	C/C++
Type name	unsigned __int64 or unsigned long long	qword	unsigned __int64
Input	scanf("%I64u", &x); or cin >> x;	read(x);	scanf("%I64u", &x);
Output	printf("%I64u", x); or cout << x;	write(x);	printf("%I64u", x);

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

A You can do it for example like this:

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;