Question

write a program for parfect number

Answer 1

write a program for perfect number

Answer 2

This C Program checks whether a given number is perfect number. Perfect number is a number which is equal to sum of its divisor. For eg,divisors of 6 are 1,2 and 3. The sum of these divisors is 6. So 6 is called as perfect number.

Here is source code of the C Program to check whether a given number is perfect number. The C program is successfully compiled and run on a Linux system. The program output is in below.

/*

 * C Program to Check whether a given Number is Perfect Number

 */

#include <stdio.h>

 

int main()

{

int number, rem, sum = 0, i;

 

printf("Enter a Number\n");

scanf("%d", &number);

for (i = 1; i <= (number - 1); i++)

{

rem = number % i;

if (rem == 0)

{

sum = sum + i;

}

}

if (sum == number)

printf("Entered Number is perfect number");

else

printf("Entered Number is not a perfect number");

return 0;

}

Output: $ cc pgm42.c $ a.out Enter a Number 6 Entered Number is perfect number   $ a.out Enter a Number 100 Entered Number is not a perfect number.


hope it helps you...