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+1 Computer Application/Science, , Principles of, Programming and Problem, Solving, , Short Note, , Click Here for, Video Class
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Approaches in problem solving, ●, , ●, , Top down design, Bottom up design.
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Phases of Programming, There are seven phases, ●, , Problem identification, , ●, , Prepare Algorithm and Flowchart, , ●, , Coding, , ●, , Translation, , ●, , Debugging, , ●, , Execution and testing, , ●, , Documentation
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Example for an Algorithm, To display sum and average of three numbers
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Example for an Algorithm, , To display largest among two
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For detailed video class about Algorithm and flowchart, , Click Here
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Example for flowchart
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ellipse(Start/Stop), , parallelogram(Input/Output), , rectangle(Process), , arrow(flow line)
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rhombus(Decision)
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Algorithm and flowchart to find largest among three marks
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Algorithm to print first 100 numbers
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Flowchart to print first, 100 numbers
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Algorithm and Flowchart to print sum of first N numbers, (S=1+2+3+....+N)
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Flow Control, Order of execution of instructions is called flow control., There are three flow control, 1. Sequential, 2. Selection, 3. Loop/Iteration
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Components of Loop, Initialisation, Condition(Test expression), Body of loop, Updation
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Coding the program, ●, , The process of writing program to solve a problem is called coding., ഒരു പ്രശ്നം പരിഹരിക്കുന്നതിനായി പ്രോഗ്രാം എഴുതുന്ന പ്രക്രിയയെ കോഡിംഗ് എന്ന്, വിളിക്കുന്നു., , ●, , We use High Level Languages for writing program., , ●, , Examples for High Level Languages are C++,BASIC,JAVA,Python..., , ●, , Program written in High Level Langauge is called source code
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Translation, ●, , Translation is the process of converting a program written in high, level language into machine language., , ●, , Program in machine language is called object code, , ●, , The compiler or interpreter is used for this purpose.
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Debugging, ●, , Programming errors are known as 'bugs', , ●, , Process of detecting and correcting errors is called debugging., , ●, , പിശകുകൾ കണ്ടെത്തി ശരിയാക്കുന്ന പ്രക്രിയയെ ഡീബഗ്ഗിംഗ് എന്ന് വിളിക്കുന്നു., , ●, , There are three types of errors, – Syntax errors, – Logical errors, – Run time errors
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Types of errors, Syntax errors, Error in syntax is called syntax error. Rule / grammar of a, programming language is called syntax., Example: incorrect punctuation, incorrect word, undefined term.., Logical Errors, Error in program logic /step is called logical error., Example: Misplacing + and *, Run time error, Error during program execution is called run time error., Example: Division by zero
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Types of documentation, ●, , ●, , We can write comments inside the source code. It is called, internal documentation. It will help us to debug and modify a, program, Another version of documentation is the preparation of system, manual and user manual.This kind of documentation is known, as external documentation.
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Performance evaluation of algorithms, Consider the following two algorithms
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