Programming Fundamentals

Programming language

Computer Languages

1. Machine language - the 0 and 1 binary code
2. Assembly language - readability, the symbolic machine language
3. High-level language - similar to human language

Compiled languages: execution after reading all the code.

Interpreted language [JS]: read a line of code, one line of code. And so on, until all the code is completed.

Software development process:

1. Software Initiative
2. Requirements analysis and definition
3. Software design (data structures and algorithms)
4. Software Implementation
5. test
6. Operations and maintenance

Errors in development:

1. Syntax error error without writing code in accordance with the format of writing caused -
2. Logic error - should have some missing steps, or steps of order
3. Runtime Error - after the reported fault code execution

Programming

program:

1. Data Structure: storage of data, such as variables and arrays.

2. algorithm: solve a problem of procedures and methods, not the narrow sense of mathematical algorithms.

algorithm

Algorithm features:

1. Finite nature: an algorithm is a limited step, but not unlimited.
2. Uncertainty: Each step is to determine, not vague.
3. 0 to a plurality of input
4. 1 to have a plurality of output
5. Effectiveness (not to appear formula is: n / 0)

Fake code:

After the analysis of algorithms written in Chinese demand process for resolving complex issues.

flow chart:

1. Elliptical - the start and end frame

2. Rectangular - processing block (execution box)

3. Parallelogram - input-output block

4. Diamond - determination block

5. Arrows - flow line