What is a perfect number?
“Perfect number is a positive number which sum of all positive divisors excluding that number.”
For example 6 is Perfect Number since divisor of 6 are 1, 2 and 3. Sum of its divisor is
1 + 2+ 3 =6
and 28 is also a Perfect Number
since 1+ 2 + 4 + 7 + 14= 28
Other perfect numbers: 496, 8128
C Code
#include <stdio.h>
#include <conio.h>
void main() //Start of main
{
int i=1, sum=0, num; //Variable Initializing
printf("Enter Number: ");
scanf("%d", num);
while(i<num)
{ // start of loop.
if(i < num)
{
if(num%i==0 )
sum=sum+i;
} //End of if statement
i++;
}
if(sum==num) //Checking if sum equals to original number
{
printf("%d is a perfect number.\n", num);
}
else
{
printf("%d is not a perfect number.\n", num);
}
//End of loop
getch();
} //End of main
C++ Code
#include <iostream>
#include <conio.h>
int main() //Start of main
{
using namespace std;
int i=1, sum=0, num; //Variable Initializing
cout << "Enter Number: "; cin >> num;
while(i<num)
{ // start of loop.
if(i < num)
{
if(num%i==0 )
sum=sum+i;
} //End of if statement
i++;
}
if(sum==num) //Checking if sum equals to original number
{
cout<<num<<" is a perfect number."<<"\n";
}
else
{
cout<<num<<" is not a perfect number."<<"\n";
}
//End of loop
getch();
} //End of main
Output:
Other Related Search Terms
- Code For Perfect Number In C++
- Code For Perfect Number In C
- C++ Programs to find perfect number
- C Programs to find perfect number
- Find all perfect numbers
