Prime Number Programing in C
Note: The program is to be written using the bitwise
operation. Use an integer array (not a Boolean
array) and a bit length (for instance 32 bits).
In this program you will write a C program to find all prime
numbers less than 10,000. You should use 10,000 bits to correspond
to the 10,000 integers under test. You should initially turn all
bits on (off) and when a number is found that is not prime, you
should turn the corresponding bit off (on). Completion of the
program requires going through all bits and printing the decimal
numbers corresponding to those bits that remain on (off).
You should use the Sieve of Eratosthenes algorithm to find all
the primes. The algorithm will be
discussed in class. You should
investigate some efficiency steps to improve the performance of the
algorithm to be measured in the number of comparisons and byte
assignments that you use. For example, consider how you might make
use of the fact that all even numbers after 2 will not be prime or
how to reduce the number of comparisons and assignments when
marking off multiples of higher primes.
After finding all primes, you should print the prime numbers out
as decimal (base 10) numbers.
There may be a large number of prime numbers less than 10,000.
To minimize the output, you should print the first 500 primes so
that there are 5-10 prime numbers per line. You should then print a
summary line of the total number of prime numbers that you found
less than 10,000.
To provide a sense of how efficient your program is, you should
output a count of the number of
comparisons and the number of
assignments that your program has performed. This will be discussed
further in class.
Be sure to submit an analysis of the results of your program.
The analysis should include the number of comparisons and
the number of assignments as a summary of the output from
your program and some verification that the results are
correct.
The program should be written to be as efficient as
possible.
You should call printf with a decimal format (%d) to print a
number. If you use a format of the form %7d as an example, it will
print the number in a field width of 7. That is very convenient for
printing the numbers in columns.
I need to rewrite this program as stated below. The program
needs to be written as follows: 1. USE an integer array (ex: int
mask[NUM] – NOT A BOOLEAN ARRAY(not bool
mask[NUM]. 2. USE a bitwise operation for the length of
the bit. (ex. bitLength 32) to specify how the number would be
stored in memory.
Not like the initial version of what I have written
below:
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