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Write a C++ program...
The "signature" of a function is the first line which gives the return type, the name of the function and the parameters with their types. As an example the signature of the gcd function is
int gcd(int m, int n)
Write a function with the following signature
bool perfect(int n)
It should return true if the sum of the divisors of n smaller than n add to n. Otherwise it should return false. As an example, for n = 28, the function should return true, because the divisors are 1, 2, 4, 7, 14. To find the sum of the divisors simply go over the numbers from 1 to n-1 and see if they divide n, if yes add that number to a running total that you maintain.
Input
28
Output
1
Input
6
Output
1
Input
9
Output
0
Input
23
Output
0
Answers
Answer:
it is divided by odd number
Explanation:
#include<bits/stdc++.h>
using namespace std;
bool perfect(int n)
{
// Final result of summation of divisors
int result = 0;
// find all divisors which divides 'num'
for (int i=2; i<=sqrt(n); i++)
{
// if 'i' is divisor of 'num'
if (n%i==0)
{
// if both divisors are same then add
// it only once else add both
if (i==(n/i))
result += i;
else
result += (i + n/i);
}
}
cout<<"result = " << result+1;
if((result) ==0)
return false;
else
return true;
}
int main()
{
int n = 28;
if(perfect(n))
cout<<"\nThe given number has divisor";
else
cout<<"\nThe given number does not have a divisor";
return 0;
}
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