C语言是完备的，用C语言就能写出任何程序，用C语言+类（带类的C）能够描述更复杂的问题（面向对象），再加上STL能够对付大多数结构化数据。
C++包含以上三个层次，任何一个层次都可以（干活完成任务），士兵可以（打战），排长也可以，连长也可以，不需要每个人都是将军。
多数人当不了将军，所以多数人无法完全掌握C++的所有语言特性和库的使用。
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FROM 220.249.128.*

brainfuck 语言是什么语言？
【 在 hgoldfish 的大作中提到: 】
: 用 brainfuck 语言也行。。然并卵。
: 别想这么多。干就完事了。
:
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FROM 112.111.192.*

完备性对编程语言来说其实是个很弱的要求。。。
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FROM 1.91.32.*

[ This program prints "Hello World!" and a newline to the screen, its
  length is 106 active command characters. [It is not the shortest.]

  This loop is an "initial comment loop", a simple way of adding a comment
  to a BF program such that you don't have to worry about any command
  characters. Any ".", ",", "+", "-", "<" and ">" characters are simply
  ignored, the "[" and "]" characters just have to be balanced. This
  loop and the commands it contains are ignored because the current cell
  defaults to a value of 0; the 0 value causes this loop to be skipped.
]
++++++++               Set Cell #0 to 8
[
    >++++               Add 4 to Cell #1; this will always set Cell #1 to 4
    [                   as the cell will be cleared by the loop
        >++             Add 2 to Cell #2
        >+++            Add 3 to Cell #3
        >+++            Add 3 to Cell #4
        >+              Add 1 to Cell #5
        <<<<-           Decrement the loop counter in Cell #1
    ]                   Loop until Cell #1 is zero; number of iterations is 4
    >+                  Add 1 to Cell #2
    >+                  Add 1 to Cell #3
    >-                  Subtract 1 from Cell #4
    >>+                 Add 1 to Cell #6
    [<]                 Move back to the first zero cell you find; this will
                        be Cell #1 which was cleared by the previous loop
    <-                  Decrement the loop Counter in Cell #0
]                       Loop until Cell #0 is zero; number of iterations is 8


【 在 ooolinux 的大作中提到: 】
: brainfuck 语言是什么语言？
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FROM 59.60.24.*

意思是C++的一小部分就是完备的
【 在 hongdiao 的大作中提到: 】
: 完备性对编程语言来说其实是个很弱的要求。。。
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FROM 120.35.168.*