_int64和long long的使用

_int64和long long的使用  

2009-10-02 01:25:26|  分类： 基础知识|字号 订阅

A Server supports signed and unsigned 64-bit integers.

• Signed 64-bit integer. Value range: -9223372036854775808 .. 9223372036854775807.LanguageGCC/G++PascalC/C++Type name__int64
  or
  long longint64__int64Inputscanf("%I64d", &x);
  or
  cin >> x;read(x);scanf("%I64d", &x);Outputprintf("%I64d", x);cout << x; write(x);printf("%I64d", x);
• Unsigned 64-bit integer. Value range: 0 .. 18446744073709551615.LanguageGCC/G++PascalC/C++Type nameunsigned __int64
  or
  unsigned long longqwordunsigned __int64Inputscanf("%I64u", &x);
  or
  cin >> x;read(x);scanf("%I64u", &x);Outputprintf("%I64u", x);
  or cout << x;write(x);printf("%I64u", x);

翻译：

A: 服务器支持64位有符号和无符号类型的整数。

• 有符号型64位整数，值域为：-9223372036854775808 .. 9223372036854775807。
  
  语言GNU C/C++PascalVisual C/C++类型名称__int64
  or
  long longint64__int64输入方法scanf("%I64d", &x);
  or
  cin >> x;read(x);scanf("%I64d", &x);输出方法printf("%I64d", x);
  
  cout << x;write(x);printf("%I64d", x);
  
• 无符号型64位整数，值域为：0 .. 18446744073709551615。
  
  语言GNU C/C++PascalVisual C/C++类型名称unsigned __int64
  or
  unsigned long longqwordunsigned __int64输入方法scanf("%I64u", &x);
  or
  cin >> x;read(x);scanf("%I64u", &x);输出方法printf("%I64u", x);
  or
  cout << x;write(x);printf("%I64u", x);