# Write a program to print all prime numbers from 1 to 300 in c

Have you seen the lovely pattern that the even numbers make? Do we have to look for the multiples of 8, 9 and 10? The numbers that are left will be prime numbers.

## Print prime numbers from 1 to 300 in c++

In this case, we would discard it as a prime number. Input upper limit to print prime numbers from user. E designed a quick way to find all the prime numbers. The idea is to find numbers in the table that are multiples of a number and therefore composite, to discard them as prime. Did you already know about the Sieve of Eratosthenes? All the highlighted numbers will be composite. Logic to print prime numbers in a given range in C program. Imagine having to check all the divisors of such a large number! It would be crazy! The numbers that are left will be prime numbers. For example: 2, 3 , 5, 7, 11 are the first five prime numbers. Finally, here you have an image including all the steps that we saw in the example, so you can see them all together. I highly recommend it if you want to learn a lot about math in a very entertaining way. We highlight the 1, which is not a prime number.

The Sieve of Eratosthenes stops when the square of the number we are testing is greater than the last number on the grid in our case To print all prime numbers in given range. Store it in some variable say end.

Run a loop from 2 to end, increment 1 in each iteration. For example: 2, 35, 7, 11 are the first five prime numbers.

### Write a program to generate all combinations of 1 2 and 3 using for loop

Logic to print prime numbers in a given range in C program. Logic to print prime numbers between 1 to n Step by step descriptive logic to print all prime numbers between 1 to n. We highlight the 1, which is not a prime number. For example: 2, 3 , 5, 7, 11 are the first five prime numbers. Imagine having to check all the divisors of such a large number! Input upper limit to print prime numbers from user. Let us modify the above program to work for prime numbers in given range. Think of a high number like , To print all prime numbers in given range. Do we have to look for the multiples of 8, 9 and 10? So now we have the list of prime numbers between 1 and 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and Prime numbers between 1 and with the Sieve of Eratosthenes We start by placing the numbers from 1 to in a table like this. You need to input upper as well as lower limit from user. We have to find out if it has any divisors, and is therefore composite.
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