Several common consensus mechanisms (pbft,raft,pow,pos,dpos,ripple) in blockchain have been summarized in recent days. Try to use simple and understandable language, the space is large, want to understand can read each algorithm introduced in front
Theorem: For any quadrilateral ABCD, the midpoint of the diagonal line AC and BD is M, N, AB, and CD. verify that the area of the triangle RMN is 1/4 of the area of the Quadrilateral ABCD.
Next we will use the C language to verify the correctness of
Basic C language examination questions
//
// Main. m
// C Language Test Library
//
// Created by MRBean on 15/5/20.
// Copyright (c) 2015 MRBean. All rights reserved.
//
# Import
/** 5, 12 questions
* Determine whether a number is a prime
Recently, looking at some of the books related to Windows, I cannot help feeling that many of the difficulties experienced in the previous learning process are essentially a lack of basic knowledge, and there are few discussions and explanations on
[C language exploration journey] Part 1 Lesson 5: computing that point, journey Part 1
Introduction
1. Course outline
2. Lesson 5: Computing
3. Lesson 6: conditional expressions
Course outline
Our courses are divided into four parts. Each part
First give you a simple example, let the reader have a holistic understanding, the code is as follows:
#include
int main ()
{
puts ("cloud-dwelling community");
return 0;
}
The concept of a function
First look at the 4th line of
The functions in C language are equivalent to subroutines or functions in Fortran language, and are equivalent to processes or functions in Pascal language. Functions provide an easy way to compute the encapsulation, and you do not need to consider
C Language Pow () function: To find X's y-square (Power)header file:
#include
The POW () function is used to find the Y power of X (the second side), and its prototype is:
Double pow (double x, double y);
POW () is
Some special usage of C language -------- [Badboy], C language badboyI. Special string macros
[Cpp]
# Define A (x) T _ # x
# Define B (x) # @ x
# Define C (x) # x
Assume that x = 1, the macro definition above will be interpreted as follows:
A (1) ---
Assertions
The unique purpose of the header file is to provide the definition of the macro assert. If the assertions are not true (expression = 0), the program will output a prompt message in the standard error stream and abort the program to call
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