Question

In C program, Use "do...while" and "for" loops to write a program that finds all prime numbers less than a specified value.

Answer 1

#include<stdio.h>

void main()

{

    int n,i,fact,j;

int a = 0;

    printf("Enter the Number");

    scanf("%d",&n);

    printf("Prime Numbers are: \n");

do

    {

        fact=0;

        for(j=1; j<=n; j++)

        {

            if(i%j==0)

                fact++;

        }

        if(fact==2)

            printf("%d " ,i);

a=a+1

    } while a<n

    getch();

}