# C Program to Generate Perfect Numbers in Given Minimum to Maximum Ranges

A perfect number is a positive integer number in which sum of all positive divisors excluding the number itself is equal to that number.

For example: 28 is perfect number since its divisors are 1, 2, 4, 7 and 14. Sum of divisors is: 1+2+4+7+14=28.

Other examples of perfect number are: 6, 496 etc.

In this C program, we are going to generate perfect numbers in ranges from mimimum to maximum, where values of minimum and maximum are given by user.

## Program

``````
#include<stdio.h>
#include<conio.h>

int main()
{
int minimum, maximum, sum, i, j;
clrscr();
printf("Enter minimum: ");
scanf("%d", &minimum);
printf("%Enter maximum: ");
scanf("%d", &maximum);

/* Generating Perfect Numbers */
for(i=minimum; i<=maximum; i++)
{

/* Finding Sum of All Divisors */
sum = 0;
for(j=1;j< i;j++)
{
if(i%j==0)
{
sum = sum + j;
}
}

/* Making Decision and Printing */
if(sum == i)
{
printf("%d\t", i);
}
}
getch();
return(0);
}
``````

Output of the above program :

```Enter minimum: 1 ↲
Enter maximum: 500 ↲
6   28    496

Note: ↲ indicates enter is pressed.
```