diff --git a/Perfectnumber.cpp b/Perfectnumber.cpp
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+++ b/Perfectnumber.cpp
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+// Cpp Program to check if a number is perfect number
+/*a perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. For instance, 6 has divisors 1, 2 and 3 (excluding itself), and 1 + 2 + 3 = 6, so 6 is a perfect number.*/
+#include<iostream>
+using namespace std;
+int Check_perfect(int n)
+{
+    int i,sum=0;
+    for(i=1;i<n;i++)
+    {
+        if(n%i==0)
+        sum+=i;
+    }
+    if(sum==n)return 1;
+    return 0;
+}
+int main()
+{
+    int n;
+    cout<<"Enter any number:";
+    cin>>n;
+    if(Check_perfect(n))
+    cout<<"It is a perfect number";
+    else
+    cout<<"It is not a perfect number";
+}
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