Difference between high level language and low level language

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	High-level Language	Low-level languages
Understanding	Human can easily understand high level languages.	Difficult to understand for human.
Execution	Execution is slow compared to low level languages.	Execution is very fast compared to low level languages.
Structural	High level languages are well structured programming.	Low level languages do not provide structured programming.
Modification	It is very easy to modify.	It is very difficult to modify.
Complexity	It is simple.	It is very complex.
Facility at hardware level	Do not provide much facility at hardware level.	Provides facility to write programs at hardware level.
Knowledge of hardware	Knowledge of hardware is not required to write programs.	Deep knowledge of hardware is required to write programs.
Applications	High level languages are normally used to write application programs.	Low level languages are normally used to write hardware programs.
Examples	Ada , Modula-2 , Pascal, COBOL, FORTRAN, BASIC	Assembler

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Algorithm

- Algorithm is a step-by-step solution of a given problem.

- In C Language, Algorithm represents the step-by-step solution.

- Advantages of Algorithm:
1. It is very easy technique to understand the logic of a given problem.
2. Simple and Very easy to write.
3. Mistakes can be identified very easily.

- Disadvantages of Algorithm:
1. Its very time consuming.
2. Very difficult to represent looping.
3. Complex and very big task are difficult to represent in algorithm.

- Example-1: An Algorithm for display " Hello World!! "
    Step-1: Start
    Step-2: Print "Hello World!!"
    Step-3: Stop.

- Example-2: An Algorithm to add two values.
    Step-1: Start
    Step-2: Input a,b
    Step-3: Calculate Sum = a + b
    Step-4: Print Sum
    Step-5: Stop.

Flow Chart

- Flow Chart is a graphical representation of a given problem.

- By using the various flow chart symbols we can represent a problem graphically

- Various Symbols of Flow Chart:

Flow Chart Symbols

- Example:

   Draw a Flow Chart to find out the largest number among three numbers.

Largest Number Among Three Numbers