Reprint: http://www.cnblogs.com/hellokitty1/p/4032990.html
Programming language development: Machine Language assembly language high-level languages
The basic steps of software development: analyzing problems and establishing mathematical models. Identify data structures and algorithms. Compile the program. Modulation program.
Characteristics of the algorithm: poor certainty there are 0 or more inputs with one or more output validity
Flowchart: Its advantage is the image is intuitive, easy to understand, easy to modify and exchange.
Structured programming: Sequential structure selection structure cycle structure
Debugger: Syntax error logic error development error run-time error
Code implementation: source code compilation source Code link
the program executes by compiling or interpreting
the basic components of a programming language:
1. Character Set―
Numeric characters:
0
,
1
,
2
,
3
,
4
,
5
,
6
,
7
,
8
,
9
. ―
Latin alphabet: A, B, c 、...... 、 z, A, B, C 、......、 Z (note: letter Case
must be differentiated. such as: ABC is different from ABC). ―
operators: "+", "-", "*", "/", "%", "=" Assignment, "<", ">",
"<=", ">=", "! =", "= =" Equals, "<<", ">>", "&", "|",
"&&" and, "| |", "^", "~", "(", ")", "[", "]" , "-",
".", "!" Non-, "?", ":", ",", ";". ―
Special and non-displayed characters: _ (hyphens or underscores), spaces, line breaks, tabs.
2. Identifier (first name)
3. Key Words Auto break case Char Const continue defaultdo double else enum extern float Forgoto if int long register return shortsigned sizeof static struct switch typedef unionunsigned void volatile while
4. StatementsSELECT statement flow control statement and Loop statement transfer statement expression statement compound statement empty statement
5. Standard library functions
Software Development Overview Programming language overview
