Integer Literals

There are several ways to specify integer literals in C#.  The type is inferred from the value specified.  The type used will be the first type in the following list that the literal fits into: int, uint, long or ulong.  A suffix can also be used to help indicate the type of the literal.

Types chosen based on suffix (in order preferred):

• u suffix – uint, ulong
• l suffix – long, ulong
• ul suffix – ulong

Here are a few examples:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

// Decimal literals, suffixes object o1 = 42;           // int object o2 = 2147483647;   // int object o3 = 2147483648;   // uint uint u1 = 2;              // uint object u2 = 100U;         // uint object o4 = 4294967296;   // long object o5 = 4294967296U;  // ulong object o6 = 42L;          // long object o7 = 9223372036854775808L;  // ulong object o8 = 42UL;         // ulong int n1 = 003;   // Hexadecimal literals int x1 = 0x1A2;     // 418 object o12 = 0xFFFFFFFF;   // 4294967295 uint object o13 = 0xFUL;   // 15, ulong

Lowercase suffixes are allowed, but you should use uppercase for clarity.

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