Create ArmstrongNumber.cpp

Author: Yashraghuvans

Leetcode/Easy Leetcode/ArmstrongNumber.cpp

@@ -0,0 +1,46 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+class Solution {
+public:
+    bool isArmstrongNumber(int num) {
+        if (num < 0) {
+            return false;
+        }
+
+        int originalNum = num;
+        int numberOfDigits = 0;
+        while (originalNum != 0) {
+            numberOfDigits++;
+            originalNum /= 10;
+        }
+
+        int sumOfPowers = 0;
+        originalNum = num;
+        while (originalNum != 0) {
+            int digit = originalNum % 10;
+            sumOfPowers += pow(digit, numberOfDigits);
+            originalNum /= 10;
+        }
+
+        return (sumOfPowers == num);
+    }
+};
+
+int main() {
+    int number;
+    cout << "Enter a number: ";
+    cin >> number;
+
+    Solution s;
+    bool isArmstrong = s.isArmstrongNumber(number);
+
+    if (isArmstrong) {
+        cout << number << " is an Armstrong number." << endl;
+    } else {
+        cout << number << " is not an Armstrong number." << endl;
+    }
+
+    return 0;
+}