QBASIC Starter Guide & Examples for Class 10 Nepal

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 Welcome to QBASIC Looping chapter in this chapter we will learn about looping statement in this chapter we are going to learn  why looping is used in programming.

So I would like to write in Nepali for easy understanding.

यो chapter मा हामी  for, while  looping  को बर्रेमा सिक्ने छौ । यो किन programming मा use  हुन्क्ष? 

एस को कारण येस्परकर छन् :

हामीलाई कैलेकाही  प्रोग्राम तब सम्म चलाउनु पर्क्ष   जवसम्म हामीले भने  जस्तो रिजल्ट औदैन , यो कुरा हामी सबैलाई थाहा छ, र यो कुरा पनि बुझ्न जरुरि छ की  प्रोग्राम जैले पनि माथि बाट तल तिर flow मा जान्छ । येदि हामीले लूपिंग को पर्योग गरेनौ भने  computer ले code लाइ १ चोटी मात्र read  गर्छ र End  हुन्क्ष येसो हुन बाट  रोक्न र एउटै code  बार  बार  repeate  नगर्न को लागि एसको प्रयोग हुन्क्ष ।  

Example:

Using for loop

FOR i = 1 TO 10
    PRINT "2 *"; i; "="; 2 * i
NEXT i

Using While Loop

i = 1
WHILE i <= 10
    PRINT "2 *"; i; "="; 2 * i
    i = i + 1
WEND

येदि हामीले लूपिंग बिना माथि को code  जस्तै Output नीकाल्न यसरि coding गर्नु पर्थेओ । 

 

CLS

PRINT "2 * 1 =", 2 * 1

PRINT "2 * 2 =", 2 * 2

PRINT "2 * 3 =", 2 * 3

PRINT "2 * 4 =", 2 * 4

PRINT "2 * 5 =", 2 * 5

PRINT "2 * 6 =", 2 * 6

PRINT "2 * 7 =", 2 * 7

PRINT "2 * 8 =", 2 * 8

PRINT "2 * 9 =", 2 * 9

PRINT "2 * 10 =", 2 * 10

End

हेर्नुहोस लूपिंग को प्रयोग ले हामीलाई कम automatic गरौन हेल्प गर्ने रैक्ष ।

Now Let's See Examples:

10 for loop and 10 while loop examples Below:

Example #1 Print numbers from 1 to 10

CLS

PRINT "Example 1: Print numbers from 1 to 10"

FOR i = 1 TO 10

    PRINT i

NEXT i

END

Example #2 Print even numbers from 2 to 20

CLS

PRINT "Example 2: Print even numbers from 2 to 20"

FOR i = 2 TO 20 STEP 2

    PRINT i

NEXT i

END

Example #3 Print the sum of numbers from 1 to 100

CLS

PRINT "Example 3: Print the sum of numbers from 1 to 100"

sum = 0

FOR i = 1 TO 100

    sum = sum + i

NEXT i

PRINT "Sum:", sum

END

Example #4 Print a countdown from 10 to 1

CLS

PRINT "Example 4: Print a countdown from 10 to 1"

FOR i = 10 TO 1 STEP -1

    PRINT i

NEXT i

END

Example #5 Print the multiplication table of 5

CLS

PRINT "Example 5: Print the multiplication table of 5"

FOR i = 1 TO 10

    PRINT "5 *"; i; "="; 5 * i

NEXT i

END

Example #6 Calculate the factorial of a number

CLS

PRINT "Example 1: Calculate the factorial of a number"

INPUT "Enter a number: ", num

factorial = 1

FOR i = 1 TO num

    factorial = factorial * i

NEXT i

PRINT "Factorial of"; num; "is"; factorial

END

Example #7 Generate a pattern of asterisks

CLS

PRINT "Example 2: Generate a pattern of asterisks"

FOR i = 1 TO 5

    FOR j = 1 TO i

        PRINT "*";

    NEXT j

    PRINT

NEXT i

END

Example #8 Calculate the sum of even numbers from 1 to 50

CLS

PRINT "Example 3: Calculate the sum of even numbers from 1 to 50"

sum = 0

FOR i = 2 TO 50 STEP 2

    sum = sum + i

NEXT i

PRINT "Sum of even numbers from 1 to 50 is"; sum

END

Example #9 Print a triangle of numbers

CLS

PRINT "Example 4: Print a triangle of numbers"

FOR i = 1 TO 5

    FOR j = 1 TO i

        PRINT j;

    NEXT j

    PRINT

NEXT i

END

Example #10 Calculate the average of a set of numbers

CLS

PRINT "Example 5: Calculate the average of a set of numbers"

INPUT "Enter the count of numbers: ", count

sum = 0

FOR i = 1 TO count

    INPUT "Enter number "; i; ": ", num

    sum = sum + num

NEXT i

average = sum / count

PRINT "Average:", average

END

While Loop Examples:

Example #1 Print numbers from 1 to 10

CLS
PRINT "Example 1: Print numbers from 1 to 10"
i = 1
WHILE i <= 10
    PRINT i
    i = i + 1
WEND
END

Example #2 Print even numbers from 2 to 20

CLS
PRINT "Example 2: Print even numbers from 2 to 20"
i = 2
WHILE i <= 20
    PRINT i
    i = i + 2
WEND
END

Example #3 Calculate the sum of numbers from 1 to 100

CLS
PRINT "Example 3: Calculate the sum of numbers from 1 to 100"
sum = 0
i = 1
WHILE i <= 100
    sum = sum + i
    i = i + 1
WEND
PRINT "Sum:", sum
END

Example #4 Print a countdown from 10 to 1

CLS

PRINT "Example 4: Print a countdown from 10 to 1"

i = 10

WHILE i >= 1

    PRINT i

    i = i - 1

WEND

END

Example #5 Generate a pattern of asterisks

CLS

PRINT "Example 5: Generate a pattern of asterisks"

i = 1

WHILE i <= 5

    j = 1

    WHILE j <= i

        PRINT "*";

        j = j + 1

    WEND

    PRINT

    i = i + 1

WEND

END

Example #6 Calculate the factorial of a number

CLS

PRINT "Example 6: Calculate the factorial of a number"

INPUT "Enter a number: ", num

factorial = 1

i = 1

WHILE i <= num

    factorial = factorial * i

    i = i + 1

WEND

PRINT "Factorial of"; num; "is"; factorial

END

Example #7 Print a triangle of numbers

CLS

PRINT "Example 7: Print a triangle of numbers"

i = 1

WHILE i <= 5

    j = 1

    WHILE j <= i

        PRINT j;

        j = j + 1

    WEND

    PRINT

    i = i + 1

WEND

END

Example #8 Calculate the sum of even numbers from 1 to 50

CLS

PRINT "Example 8: Calculate the sum of even numbers from 1 to 50"

sum = 0

i = 2

WHILE i <= 50

    sum = sum + i

    i = i + 2

WEND

PRINT "Sum of even numbers from 1 to 50 is"; sum

END

Example #9 Find the square of numbers from 1 to 10

CLS

PRINT "Example 9: Find the square of numbers from 1 to 10"

i = 1

WHILE i <= 10

    PRINT "Square of"; i; "is"; i * i

    i = i + 1

WEND

END

Example #10 Print the ASCII values of lowercase alphabets

CLS

PRINT "Example 10: Print the ASCII values of lowercase alphabets"

i = 97

WHILE i <= 122

    PRINT CHR$(i); "=", i

    i = i + 1

WEND

END

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