Basic knowledge to learn c language

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Basic Knowledge to learn C language

Sourav Ganguly
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What is Computer
• It is an electronic device. It takes inputs,
manipulate them with some predetermine
mathematical formulas and produce the
desire result.
• Ex: laptop, desktop, etc.
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What is input
• When data come to computer from the
outside world then it is called “input” to that
machine or input to a computer program.
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What is output Or What is result
• When data goes out from a computer to the
outside world then it is called “Output” or
“Result” from that machine or from that
program.
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What is input device
• It is an electronic device by which user can
produce “input” to a computer or a machine.
• Ex: mouse, keyboard, scanner, etc.
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What is output device
• It is an electronic device by which a computer
or a machine can produce “output” or “result”
to the outside world.
• Ex: printer, DVD writer (writer only not
reader), etc.
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What is computer language
• When a person wants to express himself then
he take the help of a language (say for
English). With the same principal when a
person wants to express himself to a
computer then he must use a language. This
language is called computer language.
• Ex: C, C++, Java, FORTRAN, etc.
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What is programming Or What is
computer programming
• Actually it is a bundle of different instructions.
Those instructions are placed in such a
manner by which the computer can produce
the desire result against a specific type of
input. Sometime we call this as coding or
computer programming. Computer program
take input from users and produce the result
after manipulating those inputs with the help
of some mathematical calculation.
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What is programming language
• It may be English or any language with some
specific reserved words and a strong rule to
use those words. Programming languages are
used to write program.
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Programme meaning
• When we want that computer follow our
orders then we write programme. It is actually
some instructions written in programming
language. Programme describes what to do on
an input. Computer follows those instruction
and produce output.
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What programming does
• 1. Take inputs.
• 2. Store data.
• 3. Operate on those data.
• 4. Produce output.
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What are compiler and interpreter
• Compiler and Interpreter both are the set of
programmes. They convert Human
understandable programming language to
machine level language.
• The basic difference between them is that
compiler at first reads the whole programme and
then convert it to the machine level language
where as interpreter do the same job line by line.
• Ex: compiler: C, C++, etc.
• Ex: interpreter: BASIC, MATLAB, etc.
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Sourav Ganguly
Website: http://www.startselfstudy.blogspot.in
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Basic knowledge to learn c language

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