Tuesday, October 4, 2011

Prime numbers


Program      :  Write a c program to generate all prime numbers between 1 to n.
Crated By   :  JABIR  PATHAN

#include<stdio.h>
#include<conio.h>
void main()
{
    int no,i;
    clrscr();
    printf("Enter any number or Range==>");
    scanf("%d",&no);
    for(i=1;i<=no;i++)
    {
      if(i==1||i==2||i==3||i==5||i==7)
      {
        printf("\t%d",i);
      }
     else
        if(i%2>0&&i%3>0&&i%5>0&&i%7>0)
        {
           printf("\t%d",i);
         }
    }
   getch();
  }

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