user-0 提问: 帮我编译C语言稍微复杂点的运算，

回复:
user: user-1
content: 引用 8 楼 u013697891 的回复:没见过这种格式啊谁能解释下     long count = 5L;     float ship_cost = 2.5F; C++ Integer Constants Integer constants are constant data elements that have no fractional parts or exponents. They always begin with a digit. You can specify integer constants in decimal, octal, or hexadecimal form. They can specify signed or unsigned types and long or short types.  Syntax  integer-constant :  decimal-constant integer-suffixopt octal-constant integer-suffixopt hexadecimal-constant integer-suffixopt 'c-char-sequence'  decimal-constant :  nonzero-digit decimal-constant digit  octal-constant :  0 octal-constant octal-digit  hexadecimal-constant :  0x hexadecimal-digit 0X hexadecimal-digit hexadecimal-constant hexadecimal-digit  nonzero-digit : one of  1 2 3 4 5 6 7 8 9  octal-digit : one of  0 1 2 3 4 5 6 7  hexadecimal-digit : one of  0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F  integer-suffix :  unsigned-suffix long-suffixopt long-suffix unsigned-suffixopt  unsigned-suffix : one of  u U  long-suffix : one of  l L  64-bit integer-suffix :  i64  To specify integer constants using octal or hexadecimal notation, use a prefix that denotes the base. To specify an integer constant of a given integral type, use a suffix that denotes the type.  To specify a decimal constant, begin the specification with a nonzero digit. For example:  int i = 157;   // Decimal constant int j = 0198;  // Not a decimal number; erroneous octal constant int k = 0365;  // Leading zero specifies octal constant, not decimal  To specify an octal constant, begin the specification with 0, followed by a sequence of digits in the range 0 through 7. The digits 8 and 9 are errors in specifying an octal constant. For example:  int i = 0377;   // Octal constant int j = 0397;   // Error: 9 is not an octal digit  To specify a hexadecimal constant, begin the specification with 0x or 0X (the case of the “x” does not matter), followed by a sequence of digits in the range 0 through 9 and a (or A) through f (or F). Hexadecimal digits a (or A) through f (or F) represent values in the range 10 through 15. For example:  int i = 0x3fff;   // Hexadecimal constant int j = 0X3FFF;   // Equal to i  To specify an unsigned type, use either the u or U suffix. To specify a long type, use either the l or L suffix. For example:  unsigned uVal = 328u;             // Unsigned value long lVal = 0x7FFFFFL;            // Long value specified                                    //  as hex constant unsigned long ulVal = 0776745ul;  // Unsigned long value  C++ Floating-Point Constants Floating-point constants specify values that must have a fractional part. These values contain decimal points (.) and can contain exponents.  Syntax  floating-constant :  fractional-constant exponent-partopt floating-suffixopt digit-sequence exponent-part floating-suffixopt  fractional-constant :  digit-sequenceopt . digit-sequence digit-sequence .  exponent-part :  e signopt digit-sequence E signopt digit-sequence  sign : one of  + –  digit-sequence :  digit digit-sequence digit  floating-suffix :one of  f l F L  Floating-point constants have a “mantissa,” which specifies the value of the number, an “exponent,” which specifies the magnitude of the number, and an optional suffix that specifies the constant’s type. The mantissa is specified as a sequence of digits followed by a period, followed by an optional sequence of digits representing the fractional part of the number. For example:  18.46 38.  The exponent, if present, specifies the magnitude of the number as a power of 10, as shown in the following example:  18.46e0      // 18.46 18.46e1      // 184.6  If an exponent is present, the trailing decimal point is unnecessary in whole numbers such as 18E0.  Floating-point constants default to type double. By using the suffixes f or l (or F or L — the suffix is not case sensitive), the constant can be specified as float or long double, respectively.  Although long double and double have the same representation, they are not the same type. For example, you can have overloaded functions like  void func( double );  and   void func( long double );

user: user-2
content: 感觉C,C++ 标准，对格式化输出（printf等），输出浮点数的输出格式，没有严格规定，是在引入混乱。。

user: user-2
content: 引用 5 楼 cao_julians 的回复:CODE BLOCKS 中的编译器是可以更换的。 CODE BLOCKS 只是一个编程平台，其编译器可以按程序员的要求选择，你应该查一下编译器的厂家、版本，查一下编译器编译开关设置等++ minGw对 long double 的表示方法和其他编译器可能会不一致而已 输出方法（格式）可能也不同，并且和项目的设置有关。  浮点数 float,double,long double 大约有这么几种方式输出 =>1) %f,%lf,%Lf     // MS，Borland 一般是这样的 minGw 也可以设置为这种方式输出 =>2) %hf,%f,%lf     // 还可以设置为这种方式 =>3)%f,%f,(%lf ?? %Lf) //有时候会是这么一种方式、、、、比较多，比较乱，就不列举了

user: user-3
content: 没见过这种格式啊谁能解释下     long count = 5L;     float ship_cost = 2.5F;

user: user-4
content: 楼主想干啥呢

user: user-1
content: 为什么不用GMP库呢？

user: user-5
content: CODE BLOCKS 中的编译器是可以更换的。 CODE BLOCKS 只是一个编程平台，其编译器可以按程序员的要求选择，你应该查一下编译器的厂家、版本，查一下编译器编译开关设置等

user: user-6
content: ，那就换个编译器试试啊？

user: user-0
content: CODE BLOCKS  不支持 long  double  害我不成功

user: user-7
content: 楼主是想看看大家的编译器坏没坏么

user: user-8
content: 你是想干嘛？