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LOOPING
To print the numbers from 10 to 1 you can create a program in two ways. You can either give
separate instructions to print each output or give a single set of instructions to print the output.
This set of instructions will repeat for a fixed number of times or until the condition is satisfied.
This is called looping. In BASIC-256, the statements used for repetition of instructions in a
program are called iterative statements or looping statements. Looping statements are very
useful and necessary for developing an application. BASIC-256 provides FOR...NEXT and WHILE...
END WHILE as looping statements. Let's learn about them.
FOR…NEXT STATEMENT
The FOR...NEXT statement is used to run a code a fixed number of times. To manage this kind
of loop, we create a variable that tracks how many times the loop will run. Generally, this variable
is called a count control variable. The basic syntax of the FOR...NEXT statement is as follows:
FOR counter = startNumber TO endNumber
Statements to repeat
Increase or decrease the counter variable
END
Where
the counter is a variable that keeps count of the number of times the instructions inside the
loop have been executed.
the startNumber is the starting number of value of the loop.
the endNumber is the total number of times the loop must run.
Let us see a program to understand the concept
of FOR...NEXT statement. This program prints
the numbers from 1 to 15 in order. The concept
of increasing the value of a variable is used
in programming very often. So, most of the
programming languages have a simpler and
easier way to do this. In the preceding example,
the variable i contains a value that increases by 1
each time the loop runs. Printing numbers 1 to 15
SAMPLE PROGRAMS USING FOR...NEXT STATEMENT
Program 4: To print even numbers up to 30.
70 Modular (Ver. 1.1)-VII

