Program to check prime number or not in c

In the below program, after declaring an array we iterate through all the elements from 2 to sqrt N and check for each element if it is divisible by N. If any such number is found, then false is returned. If any number doesn't satisfy the criteria that means it is a prime number.

The below program demonstrates how to check whether a number is prime or not using a recursive function. Learn CSS. Learn JavaScript. C Language C Tutorial. C Compiler. Standard Template Library. Python Python Tutorial. Python Programs. Python How Tos. Numpy Module. Matplotlib Module. Tkinter Module. Network Programming with Python.

Learn Web Scraping. More in Python Python Compiler. Java Core Java Tutorial. Java Type Conversion Examples. Java Wrapper Class. Java 8. So to reduce the number of iterations they must be a better way. An optimised solution to this is run the loop only halfway. This will reduce the number of iterations required so we will use this algorithm to create our program.

C Server Side Programming Programming. Sudhir sharma. Else, the initial value of isPrime is left unchanged and the for loop is executed, which checks whether the number entered by the user is perfectly divisible by i or not. If the number entered by the user is perfectly divisible by i , then isPrime is set to false and the number will not be a prime number. But if the input number is not perfectly divisible by i throughout the entirety of the loop, then it means that the input number is only divisible by 1 and that number itself.

Course Index Explore Programiz. Popular Examples Create a simple calculator. Check prime number. Print the Fibonacci sequence. Check if a number is palindrome or not. Program to multiply matrix.