C++ Exercises: Check whether a given number is Perfect or not
C++ Numbers: Exercise-4 with Solution
Write a program in C++ to check whether a given number is Perfect or not.
Pictorial Presentation:
Sample Solution:
C++ Code :
# include <iostream>
# include <string>
using namespace std;
int main()
{
int i=1, u=1, sum=0,n;
cout << "\n\n Check whether a given number is a Perfect number:\n";
cout << "------------------------------------------------------\n";
cout << "Input a number: ";
cin >> n;
while(u<=n)
{
if(u<n)
{
if(n%u==0 )
sum=sum+u;
}
u++;
}
if(sum==n)
{
cout<<n<<" is a Perfect number."<<"\n";
}
else
{
cout<<n<<" is not a Perfect number."<<"\n";
}
}
Sample Output:
Check whether a given number is a Perfect number: ------------------------------------------------------ Input a number: 28 28 is a Perfect number.
Flowchart:
C++ Code Editor:
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