Tuesday, October 11, 2011

C program to display perfect,abudent,and deficiant numbers


#include<conio.h>
#include<stdio.h>
#include<iostream.h>
#include<math.h>
int test(int n);
void main()
{
int i,lower,upper,temp;
clrscr();
printf("Enter the range\n");
printf("\tLower Bound?");
scanf("%d",&lower);
printf("\tUpper Bound?");
scanf("%d",&upper);
if(lower>upper)
{  
temp=lower;
lower=upper;
upper=temp;
}

    printf("Number\tType\n");
    for(++lower;lower<upper;lower++)
    switch(test(lower))
          {   
           case 0:printf("%d\tperfect\n",lower);break;
           case 1:printf("%d\tAbudant\n",lower);break;
           case 2:printf("%d\tdeficiant\n",lower);break;
          }
     getch();     
}
int test(int n)
{
 int i,sum=0;
 for( i=2;i<n;++i)
   if(n%i==0)
     sum+=i;
     printf("%d",sum);
     getch();
   if(sum==n)
     return 0;
  else
    if(sum>n)
      return 1;
    else 
      return 2;

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