1. programming language into assembly language and high-level language into two categories, high-level language of choice
2. Select the language for the principle: the principle of minimal effort
The principle of minimum skills
Minimum error principle
Minimum maintenance principles
The principle of reducing memory
3. coding principles: the first find the correct done quickly
After first seeking clear done quickly
Do not forget to keep correct procedures done quickly
In order to maintain the fast clean program
Do not sacrifice clarity due to efficiency
4. Good standard procedures: easy to test and debug
Easy to maintain
Easy to modify
Simple design
high efficiency
5. Structured programming includes two aspects: When programming, emphasizing the use of several basic control structures, program design process, as far as possible and the top-down principle of stepwise refinement from coarse to fine, a step expand.
6. The main principles of structured programming: the language used in sequence, selection, and other limited repeating structure represented by the basic control program logic
Allow only selected control structure has an inlet and an outlet
Complex structure should be combined with a nested structure to achieve the basic control
software test
1. The purpose of software testing: testing is the execution of the program, aims to discover errors, a good test is to find errors so far not found a successful test is found wrong so far found no test.
2. The principles of software testing: Should be "as soon as possible and continue to carry out software testing," the motto as a software developer.
The two parts should test the test data input and output corresponding to the expected composition of
Programmers should avoid checking their own procedures
When designing test cases, input conditions shall include reasonable and unreasonable input conditions.
3. The test information flow diagram below:
The two commonly used test methods: black box testing and white box.
Black box testing is to test the object as a black box function to check the program meets its functional description.
White box test is the object as a transparent box, all logical paths for testing procedures.
