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Program calculation is a method for:
CD
Programming the calculation or formula to be executed.
(2)
Storing the program in the computer.
@Obtaining the result automatically by simply inputting data in the program.
Let's examine the programming concept and procedure required to process a given
problem using the computer .
•
Programs and Programming
When computer users process a problem, they compose instructions which are written
in a language that the computer can understand. These instructions are called a "pro-
gram" and composing these instructions is known as "programming".
•
What is a program?
In order to make a program, there are various rules or grammar. This will be explained
later in detail. At this time let's take a look at an example of a simple, fundamental
program to see what it looks like.
Command
Operand
I
I
1
e
INPUT A.B-----I
nput statement
20 C
=
A
+
B
Operation statement
30 PR INT C
Output statement
The above is a fundamental program which consists of an input statement, an operation
statement, an output statement, and line numbers. An input statement is used to enter
the data. An operation statement is used to process that data. An output statement is
used to retrieve the execution result. Line numbers are used at the beginning of each
line. The operation statement can include judgment statements and cover many lines
to make a long and complex program. Also following the line number, a line consisting
of one word appears. This word is called a "command" and it tells the computer what
to do next. Following this command is a character string which contains information
required to process the command. This is called the "operand".
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