Prime Show

Best Prime Example Is Availble in my another post. Kindly check.
http://zakilive.com/2017/05/12/check-the-number-is-prime-or-not-in-c-easy-and-details-explanation/

problem:
Write a program to show prime from 0 to N  where N will be taken from user.
code:

#include<stdio.h>
int main()
{
    int i,j,count=0,N;
    printf("Enter N:");
    scanf("%d",&N);
    printf("prime = ");
    for(i=1; i<=N; i++)
    {
        for(j=1; j<=i; j++)
        {
            if(i%j==0)
                count++;
        }
        if(count==2)
            printf("%d\t",i);
        count=0;
    }
    return 0;
}

Another Logic:

#include<stdio.h>
int main()
{
    int i,j,N,isPrime;
    while(1){
    printf("enter value:\n");
    scanf("%d",&N);
    for(i=2; i<=N; i++)
    {
        isPrime=0;
        for(j=2; j<=i/2; j++)
        {
            if(i%j==0){
                isPrime=1;
            }
        }
        if(isPrime==0 && N!=1)
        {
            printf("%d\t",i);
        }
    }
    printf("\n");
}
   return 0;
}

Another Logic collected from this link:
http://www.techcrashcourse.com/2015/11/c-program-to-print-all-prime-numbers-between-1-to-N.html
Understood the implementation of the code.

 

It would be a great help, if you support by sharing :)
Author: zakilive

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