Prime Number Checker in QBasic

A very simple program that I wrote using QBasic that will ask the user to give a number and then the program will check if the given number is a Prime or Not a Prime Number.

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Sample Program Output

Program Listing

prime.bas

CLS

PRINT

PRINT "Prime Number Checker in QBasic"

PRINT

INPUT "Give a Number : "; num_val

C = 0

PRINT

FOR I = 1 TO num_val

    IF num_val MOD I = 0 THEN C = C + 1

NEXT I

IF C = 2 THEN

    PRINT "The given number"; num_val; "is a Prime Number."

ELSE

    PRINT "The given number"; num_val; " is not a Prime Number."

END IF

PRINT

print "End of Program"

END